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Complete complementarity relations for quantum correlations in neutrino oscillations with CP violation Int. J. Quantum Inf. (IF 1.2) Pub Date : 2024-02-29 Massimo Blasone, Silvio De Siena, Cristina Matrella
We characterize quantum correlations encoded in a three-flavor oscillating neutrino system by taking into account CP violation. By means of the complete complementarity relations (CCR), we study the trade-off of predictability, local coherence and nonlocal correlations by using relevant parameters given by neutrino oscillation experiments. Although the CCR describe very well the contributions associated
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Quantum Zeno effect: A qutrit controlled by a qubit Int. J. Quantum Inf. (IF 1.2) Pub Date : 2024-02-28 Komal Kumari, Garima Rajpoot, Sudhir Ranjan Jain
For a three-level system monitored by an ancilla, we show that the quantum Zeno effect can be employed to control quantum jump for error correction. Further, we show that we can realize cNOT gate, and effect dense coding and teleportation using a three-level system with an ancilla. We believe that this work paves the way to generalize the control of a qudit.
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Comparison of distances and entropic distinguishability quantifiers for the detection of memory effects Int. J. Quantum Inf. (IF 1.2) Pub Date : 2024-02-28 Bassano Vacchini
We consider a recently introduced framework for the description of memory effects based on quantum state distinguishability quantifiers, in which entropic quantifiers can be included. After briefly presenting the approach, we validate it considering the performance of different quantifiers in the characterization of the reduced dynamics of a two-level system undergoing decoherence. We investigate the
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Quantum confinement effects on the structural and optical properties of nanostructured tin oxide powder Int. J. Quantum Inf. (IF 1.2) Pub Date : 2024-02-28 Fatiha Besahraoui, Kheira Chebbah
Nanostructured Tin oxide powders, prepared by chemical precipitation method, exhibit interesting structural and optical properties at nanoscale dimensions. Structural characterization confirmed the formation of pure nanostructured SnO2 powders with average crystalline grain size of 54.4nm calculated with relative uncertainty of 1.62%. The optical properties of nanoSnO2 powder performed by using transmittance
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Joint remote state preparation protocol for non-maximally entangled W-states and fidelity analysis in noisy environments Int. J. Quantum Inf. (IF 1.2) Pub Date : 2024-02-24 Binayak S. Choudhury, Manoj Kumar Mandal, Soumen Samanta
In this paper, we discuss a protocol for preparing a non-maximally entangled W-state at a distant location where there are two parties intending such creation each of whom possesses only partial information about the state. These two parties along with a third party Controller, participate in a single protocol in order to create the intended state in the hands of a fourth party. The role of the controller
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Application of machine learning to experimental design in quantum mechanics Int. J. Quantum Inf. (IF 1.2) Pub Date : 2024-02-22 Federico Belliardo, Fabio Zoratti, Vittorio Giovannetti
The recent advances in Machine Learning hold great promises for the field of quantum sensing and metrology. With the help of reinforcement learning, we can tame the complexity of quantum systems and solve the problem of optimal experimental design. Reinforcement learning is a powerful model-free technique that allows an agent, which is typically a neural network, to learn the best strategy to reach
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Benchmarking a neutral-atom quantum computer Int. J. Quantum Inf. (IF 1.2) Pub Date : 2024-02-17 N. Wagner, C. Poole, T. M. Graham, M. Saffman
In this study, we simulated the algorithmic performance of a small neutral atom quantum computer and compared its performance when operating with all-to-all versus nearest-neighbor connectivity. This comparison was made using a suite of algorithmic benchmarks developed by the Quantum Economic Development Consortium. Circuits were simulated with a noise model consistent with experimental data from [Nature604
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Classifying entanglement by algebraic geometry Int. J. Quantum Inf. (IF 1.2) Pub Date : 2024-02-01 Masoud Gharahi
Quantum Entanglement is one of the key manifestations of quantum mechanics that separate the quantum realm from the classical one. Characterization of entanglement as a physical resource for quantum technology became of uppermost importance. While the entanglement of bipartite systems is already well understood, the ultimate goal to cope with the properties of entanglement of multipartite systems is
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Enhancing the fidelity of controlled cyclic teleportation via quantum weak measurement techniques to combat the decoherence due to amplitude damping Int. J. Quantum Inf. (IF 1.2) Pub Date : 2024-02-01 Deepak Singh, Sanjeev Kumar
This study focuses on the impact of amplitude-damping noise, which diminishes the fidelity of the teleported quantum state on an existing cyclic quantum teleportation scheme [V. Verma, D. Yadav and D. K. Mishra, Opt. Quantum Electron.53 (2021) 1]. The CQT scheme involves three participants performing a cyclic teleportation along with a controller to supervise the protocol. We also propose weak measurement
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Three-qubit Deutsch–Jozsa in measurement-based quantum computing Int. J. Quantum Inf. (IF 1.2) Pub Date : 2024-01-27 M. Schwetz, R. M. Noack
Measurement-based quantum computing (MBQC), an alternate paradigm for formulating quantum algorithms, can lead to potentially more flexible and efficient implementations as well as to theoretical insights on the role of entanglement in a quantum algorithm. Using the graph-theoretical ZX-calculus, we describe and apply a general scheme for reformulating quantum circuits as MBQC implementations. After
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Verifiable multi-party quantum secret sharing based on GHZ states Int. J. Quantum Inf. (IF 1.2) Pub Date : 2024-01-19 Weijie Su, Haozhen Situ, Qiong Huang, Cai Zhang
In this paper, we propose a verifiable multi-party secret sharing protocol based on an entanglement swapping theorem of GHZ states. In our protocol, all receivers only need to perform simple GHZ measurements to recover the secret. The quantum-safe system proposed in this paper is feasible with current quantum technologies, and we show that it is secure against both external and internal attacks. In
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Theoretical and simulation investigation of practical QKD for both BB84 and SARG04 protocols Int. J. Quantum Inf. (IF 1.2) Pub Date : 2024-01-19 Benlahcene Djaouida, Sellami Ali
In this paper, we provide a simple approach for determining the rate of secure key production when single-photon and two-photon pulses are used to generate the secure key. For both BB84 and SARG04, we offer estimation and optimization of decoy-state parameters for a single decoy state protocol and two decoy state protocols. This method can be used to determine the lower bound on the fraction of single-photon
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Fast and noise-robust quantum state tomography based on ELM Int. J. Quantum Inf. (IF 1.2) Pub Date : 2024-01-19 Xiao-Dong Wu, Shuang Cong
This paper proposed a quantum state tomography approach based on the extreme learning machine (ELM), which is available in the reconstruction of quantum states via a lightweight neural network. The key step of the proposed tomography approach is to employ the ELM to approximate the complex mapping between the measurement values sequence and the real density matrix. After obtaining the output of the
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Controlled cyclic quantum teleportation of unknown single-qutrit states Int. J. Quantum Inf. (IF 1.2) Pub Date : 2024-01-11 Jiayin Peng, Miao Liu, Jiangang Tang, Zhen Yang, Zhihua Zhang
In order to explore multi-directional quantum communication in a three-dimensional (3D) system, five-, seven- and (2n+1)-qutrit entangled states are constructed by 3D-Hadamard gates and 3D-controlled-NOT gates in this paper. Then a new scheme of controlled bidirectional quantum teleportation (QT) via five-qutrit entangled channel is proposed, where two observers can exchange their unknown single-qutrit
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Comparing two entropy functions of a quantum channel Int. J. Quantum Inf. (IF 1.2) Pub Date : 2024-01-10 Junfang Cheng, Yanjun Chu, Fang Huang
Inspired by a conjecture related to numerical investigations for a quantum channel in a system of large size, we shall study relations between two different entropies of a quantum channel. One of them is defined by Gour and Wilde as the generalization of quantum relative entropy and maximally mixed state. The second one is defined as the difference between the entropy of the Choi state of the quantum
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Financial fraud detection: A comparative study of quantum machine learning models Int. J. Quantum Inf. (IF 1.2) Pub Date : 2023-12-16 Nouhaila Innan, Muhammad Al-Zafar Khan, Mohamed Bennai
In this research, a comparative study of four Quantum Machine Learning (QML) models was conducted for fraud detection in finance. We proved that the Quantum Support Vector Classifier model achieved the highest performance, with F1 scores of 0.98 for fraud and nonfraud classes. Other models like the Variational Quantum Classifier (VQC), Estimator Quantum Neural Network (QNN), and Sampler QNN demonstrate
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Quantum process matrices as images: New tools to design novel denoising methods Int. J. Quantum Inf. (IF 1.2) Pub Date : 2023-12-07 Massimiliano Guarneri, Andrea Chiuri
Inferring a process matrix characterizing a quantum channel from experimental measurements is a key issue of quantum information. Noise affecting the measured counts could bring to matrices different from the expected ones and optimization methods usually employed, i.e. the maximum likelihood estimation (MLE), are characterized by several drawbacks. Lowering the noise could be necessary to increase
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Controlled quantum teleportation with the ability to change the destination of qubits Int. J. Quantum Inf. (IF 1.2) Pub Date : 2023-11-29 Mahdi Sadeghizadeh, Monireh Houshmand, Mahsa Khorrampanah, Hossein Aghababa, Yousef Mafi
Quantum sciences and technologies introduce a new arena whose applications are widely used in the microscopic world. Quantum communication is also an important branch of quantum science by which we intend to transmit quantum information. Quantum teleportation is important because it uses the entanglement principle which is unique in quantum space to transmit quantum information. In fact, in this type
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Manipulating the direction of one-way steering in an optomechanical ring cavity Int. J. Quantum Inf. (IF 1.2) Pub Date : 2023-11-28 Jamal El Qars, Benachir Boukhris, Ahmed Tirbiyine, Abdelaziz Labrag
Quantum steering refers to the apparent possibility of exploiting nonseparable quantum correlations to remotely influence the quantum state of an observer via local measurements. Different from entanglement and Bell nonlocality, quantum steering exhibits an inherent asymmetric property, which makes it relevant for many asymmetric quantum information processing tasks. Here, we study Gaussian quantum
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The hitting time of quantum walk on 2D lattice Int. J. Quantum Inf. (IF 1.2) Pub Date : 2023-11-24 Qi Han, Ning Bai, Huan Wang, Lijie Gou, Shuai Wang
The hitting time, which refers to the time required to find the marked element in the search algorithm, is one of the most interesting properties of quantum walk. In this paper we briefly analyze the hitting time on a finite 2D lattice in the classical case, focusing on the quantum version of the hitting time and give specific expressions for each. It is well known that the quantum hitting time has
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On the eternal non-Markovianity of non-unital quantum channels Int. J. Quantum Inf. (IF 1.2) Pub Date : 2023-11-08 Shrikant Utagi, Subhashish Banerjee, R. Srikanth
The eternally non-Markovian (ENM) Pauli channel is an example of a unital channel characterized by a negative decay rate for all time t>0. Here, we consider the problem of constructing an analogous non-unital channel, and show in particular that a d-dimensional generalized amplitude damping (GAD) channel cannot be ENM when the non-Markovianity originates solely from the non-unital part of the channel
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Automated superconducting qubit characterization platform based on a modified 3D printer Int. J. Quantum Inf. (IF 1.2) Pub Date : 2023-10-21 Haochen Li, Soe Gon Yee Thant, Rainer Dumke
Josephson Junctions are important components in superconducting qubits. It introduces anharmonicity to the energy level spacings of the qubit which allow us to identify two unique quantum energy states for computing. It is difficult to fabricate multiple junctions within the same desired parameter range. Characterisation of the junctions is, therefore, a necessary step after fabrication. In particular
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Entanglement recovery by weak measurement reversal in tripartite systems Int. J. Quantum Inf. (IF 1.2) Pub Date : 2023-10-07 Munsif Jan, Niaz Ali Khan
Entanglement protection from noisy environments is an essential task in practical quantum information and communication. In this paper, we investigate the entanglement recovery of an amplitude-damped tripartite GHZ state by a weak-measurement reversal procedure. In particular, we emphasize the key importance of the inequivalency of probability amplitudes of the tripartite system under the recovery
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Error-insensitive preparation of entangled states between a Josephson qubit and microwave photons via invariant-based shortcuts Int. J. Quantum Inf. (IF 1.2) Pub Date : 2023-10-06 Run-Ying Yan, Xiao-Jing Lu, Ming Li, Xin-Ping Dong, Fei Yang, Zhi-Bo Feng
Optimal preparation of quantum entanglement is of significance to information processing and state engineering. In this paper, an efficient scheme is proposed to implement error-insensitive generation of entangled states between a Josephson qubit and microwave photons by the technique of invariant-based shortcuts to adiabaticity. A superconducting qubit is dispersively coupled to a quantized cavity
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Two classes of quantum codes from almost MDS codes Int. J. Quantum Inf. (IF 1.2) Pub Date : 2023-08-02 Zhonghua Sun, Xinyue Liu, Shixin Zhu
Hermitian dual-containing codes are an important class of linear codes which have important applications in the construction of quantum codes. In this paper, two classes of Hermitian dual-containing almost MDS codes over finite fields are studied. By employing the Hermitian construction, a class of quantum codes with minimum distance 3 and a class of quantum codes with minimum distance 4 are constructed
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Correspondence between quantum communication protocol and quantum game theory Int. J. Quantum Inf. (IF 1.2) Pub Date : 2023-07-10 Meera Ramachadran, S. Balakrishnan
In search of a way to securely transfer information, the scientific world uses entanglement with several qubits. However, the experimental feasibility of implementing communication protocols remains unclear. In this work, we indicate a one-to-one correspondence between a quantum dialogue and the quantum Stackelberg duopoly game. If we consider a controller-dependent communication protocol to be a sequential
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Optimizing the walk coin in the quantum random walk search algorithm Int. J. Quantum Inf. (IF 1.2) Pub Date : 2023-07-11 Hristo Tonchev, Petar Danev
This paper examines quantum random walk search algorithm with walk coin constructed by generalized Householder reflection and additional phase shift factor. The results from numerical simulations with neural network show that, with such a construction of the walk coin, the algorithm is more robust to inaccuracies in the specific values of its parameters, as long as it is possible to control the phase
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Quantum simulation of quantum mechanical system with spatial noncommutativity Int. J. Quantum Inf. (IF 1.2) Pub Date : 2023-07-06 S. Hasibul Hassan Chowdhury, Talal Ahmed Chowdhury, Salah Nasri, Omar Ibna Nazim, Shaikh Saad
Quantum simulation has become a promising avenue of research that allows one to simulate and gain insight into the models of high energy physics whose experimental realizations are either complicated or inaccessible with current technology. We demonstrate the quantum simulation of such a model, a quantum mechanical system with spatial noncommutativity, which is inspired by the works in noncommutative
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Non-Markovianity and entanglement detection Int. J. Quantum Inf. (IF 1.2) Pub Date : 2023-07-04 Sourav Chanduka, Bihalan Bhattacharya, Rounak Mundra, Samyadeb Bhattacharya, Indranil Chakrabarty
We have established a novel method to detect non-Markovian indivisible quantum channels using structural physical approximation. We have shown that this method can be used to detect eternal non-Markovian operations. We have further established that harnessing eternal non-Markovianity, we can device a protocol to detect quantum entanglement.
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An efficient framework for quantum video and video editing Int. J. Quantum Inf. (IF 1.2) Pub Date : 2023-06-30 Zhanhong Wei, Wentao Sun, Shangchao Zhu, Mengdi Han, Huijuan Yin
This paper proposes an Efficient Framework for Quantum Video (EFQV) in quantum computer. EFQV adds time index information into different frames on BRQI (a Quantum Image Representation based on Bitplanes, BRQI) images, and each bitplanes quantum image adds a time index. Complement of Colors (COC) operator, Reverse of Bitplanes (ROB) operator, and Shift of Frames (SOF) operator are designed for EFQV
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Nonreciprocal unconventional photon blockade in atom-cavity with χ(2) nonlinear medium Int. J. Quantum Inf. (IF 1.2) Pub Date : 2023-06-30 H. Z. Shen, T. Z. Luan, Y. H. Zhou, Z. C. Shi, X. X. Yi
In this paper, we show that the photon blockade (PB) can be observed in a nonreciprocal way with a driven spinning atom-cavity coupled filled with χ(2) nonlinear medium. We analytically derive the optimal conditions for strong photon antibunching, which are in good agreement with those obtained by numerical simulations. Under the weak driving condition, we discuss the physical origins of the nonreciprocal
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Optimization on large interconnected graphs and networks using adiabatic quantum computation Int. J. Quantum Inf. (IF 1.2) Pub Date : 2023-06-28 Venkat Padmasola, Rupak Chatterjee
In this paper, we demonstrate that it is possible to create an adiabatic quantum computing algorithm that solves the shortest path between any two vertices on an undirected graph with at most 3V qubits, where V is the number of vertices of the graph. We do so without relying on any classical algorithms, aside from creating an (V×V) adjacency matrix. The objective of this paper is to demonstrate the
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An efficient combination strategy for hybrid quantum ensemble classifier Int. J. Quantum Inf. (IF 1.2) Pub Date : 2023-06-21 Xiao-Ying Zhang, Ming-Ming Wang
Quantum machine learning has shown advantages in many ways compared to classical machine learning. In machine learning, a difficult problem is how to learn a model with high robustness and strong generalization ability from a limited feature space. Combining multiple models as base learners, ensemble learning (EL) can effectively improve the accuracy, generalization ability and robustness of the final
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Quantum discord dynamics of the GHZ state in Markovian environments Int. J. Quantum Inf. (IF 1.2) Pub Date : 2023-05-15 Dan Xue, Ming-Qiang Bai, Liang Tang, Si-Ting Xiong, Zhi-Wen Mo
In quantum mechanics, quantum discord is a valuable quantum resource. As a generalization of the initial quantum discord, the multipartite quantum discord (MQD) exhibits excellent properties in the complete monogamy relation. In this paper, the dynamics of MQD are investigated for the Greenberger–Horne–Zeilinger (GHZ) state in Markovian environments. More specifically, it indicates that MQD of the
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An improved order-encoded quantum image representation model and its application Int. J. Quantum Inf. (IF 1.2) Pub Date : 2023-05-12 Kai Xu, Shukun Ran
Quantum image representation is an important research direction of quantum image processing, which mainly studies the use of quantum properties to encode and store images. At present, most quantum image representation models store image grayscale-related information, but lack histogram-related information. A few quantum representation models that store image histogram information cannot accurately
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Construction of quantum MDS codes from generalized Reed–Solomon codes Int. J. Quantum Inf. (IF 1.2) Pub Date : 2023-05-10 Mingwei Lu, Shixin Zhu
Quantum maximum-distance-separable (MDS) codes play an important role in the quantum codes. The previous quantum MDS codes had been constructed according to q is odd or even. However, such classification omits to consider some special categories of quantum MDS codes. Because of this, we will discuss the other classifications of q. In this paper, we construct some new q-ary quantum MDS codes from generalized
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Nonreciprocal unconventional photon blockade with spinning two-mode cavity coupled via χ(2) nonlinearities Int. J. Quantum Inf. (IF 1.2) Pub Date : 2023-04-28 Tianze Luan, Jiaxin Yang, Jiao Wang, Hongzhi Shen, Yanhui Zhou, Xuexi Yi
In this paper, we propose how to achieve nonreciprocal unconventional photon blockade (NUPB) in a spinning system consisting of two single-mode cavities with χ(2) nonlinearity through the Fizeau drag when the two cavities are driven simultaneously. Under the weak driving condition, we discuss the physical origins of nonreciprocal unconventional photon blockade, which originates from the destructive
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Quantum double models coupled to matter fields: A detailed review for a dualization procedure Int. J. Quantum Inf. (IF 1.2) Pub Date : 2023-04-18 M. F. Araujo de Resende, J. P. Ibieta Jimenez, J. Lorca Espiro
In this paper, we investigate how it is possible to define a new class of lattice gauge models based on a dualization procedure of a previous generalization of the Kitaev Quantum Double Models. In the case of this previous generalization that will be used as a basis, it was defined by adding new qudits (which were denoted as matter fields in reference to some works) to the lattice vertices with the
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All quantum mixtures are proper Int. J. Quantum Inf. (IF 1.2) Pub Date : 2023-04-14 Leonardo Castellani
It is argued that proper and improper quantum mixed states have no observable differences, and hence should not be distinguished. This has implications for subjective approaches to quantum mechanics, and invalidates one of the main motivations for relational interpretations.
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Preparing maximally entangled states by monitoring the environment-system interaction Int. J. Quantum Inf. (IF 1.2) Pub Date : 2023-04-07 Ali A. Abu-Nada, Moataz A. Salhab
A common assumption in an open quantum system is that the noise induced by the environment, due to the interaction between a quantum system and its environment, is responsible for the disappearance of quantum properties. Interestingly, Barreiro et al. [Nature470 (2011) 486] show, experimentally, using an open-system quantum ion traps simulator, an environment state can be engineered and controlled
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An overview: Big data analysis by deep learning and image processing Int. J. Quantum Inf. (IF 1.2) Pub Date : 2023-04-07 Yousef Ameen Esmail Ahmed, Biao Yue, Zongliang Gu, Jingyu Yang
Big Data Analysis and Deep Learning are two fields of data science that are getting a proportion of interest nowadays. The relevance of big data has increased as a result of the massive amounts of domain-specific data that many public and private firms have gathered. This data may be useful for research on topics like national security, fraud, and medical informatics and detection. Huge volumes of
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Abstract model of continuous-time quantum walk based on Bernoulli functionals and perfect state transfer Int. J. Quantum Inf. (IF 1.2) Pub Date : 2023-04-07 Ce Wang
In this paper, we present an abstract model of continuous-time quantum walk (CTQW) based on Bernoulli functionals and show that the model has perfect state transfer (PST), among others. Let 𝔥 be the space of square integrable complex-valued Bernoulli functionals, which is infinitely dimensional. First, we construct on a given subspace 𝔥L⊂𝔥 a self-adjoint operator ΔL via the canonical unitary involutions
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Quantum multi-party private set union protocol based on least common multiple and Shor’s algorithm Int. J. Quantum Inf. (IF 1.2) Pub Date : 2023-03-31 Wenjie Liu, Qi Yang, Zixian Li
Private set union (PSU) allows several parties to obtain the union of their private sets without disclosing each party’s private information. Existing PSU protocols often have polynomial complexity for the complete set size or complicated process. In this paper, a quantum multi-party PSU protocol based on least common multiple (LCM) and Shor’s algorithm is proposed, which enables the union of multiple
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Quantifying emotions through quantum computations Int. J. Quantum Inf. (IF 1.2) Pub Date : 2023-03-24 Jaiteg Singh, Kamalpreet Singh Bhangu
Quantum computations are extensively used to solve challenging problems and emotion detection is one such field that has lot of potential to be explored. Classical studies can identify emotions but fail to observe their intensities at such minute level. The proposed research primarily intends to quantify the intensities related with happy and sad emotions on a quantum computer examining subjects within
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Quaternionic quantum automata Int. J. Quantum Inf. (IF 1.2) Pub Date : 2023-03-20 Songsong Dai
Quaternionic quantum theory is a generalization of the standard complex quantum theory. Inspired by this, we study the quaternionic quantum computation using quaternions. We first develop a theory of quaternionic quantum automata as a model of quaternionic quantum computation. Quaternionic quantum automata also can be seen as an extension of complex quantum automata. Then we introduce some operations
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Local quantum uncertainty of a two-qubit XY Heisenberg model with different Dzyaloshinskii–Moriya couplings Int. J. Quantum Inf. (IF 1.2) Pub Date : 2023-03-16 Younes Moqine, Brahim Adnane, Abdelhadi Belouad, Soufiane Belhouideg, Rachid Houça
This study investigates the local quantum uncertainty (ℒ𝒬𝒰) of a two-qubit Heisenberg XY chain with different directions of Dzyaloshinskii–Moriya (DM) interactions. The DM interaction parameters and coupling coefficient J are demonstrated to be beneficial in managing correlation. The DM interaction’s x-axis parameter has more influence on correlation than the DM interaction’s z-axis. As a result
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Coherence distillation through one-way LICC Int. J. Quantum Inf. (IF 1.2) Pub Date : 2023-03-16 Sumana Karmakar, Ajoy Sen, Biswajit Paul, Kaushiki Mukherjee, Indrani Chattopadhyay, Amit Bhar
Understanding the resource consumption in distributed scenario is one of the main goals in resource theory. Entanglement swapping is an important example in such scenario. It involves at least three parties. Initially two pairs are entangled and other is separable. Performing Bell measurement on common party, resource is swapped in the separable pair. In resource theory of coherence, the initial separable
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Protection of noisy multipartite entangled states of superconducting qubits via universally robust dynamical decoupling schemes Int. J. Quantum Inf. (IF 1.2) Pub Date : 2023-03-16 Akanksha Gautam, Arvind, Kavita Dorai
In this paper, we demonstrate the efficacy of the universally robust dynamical decoupling (URDD) sequence to preserve multipartite maximally entangled quantum states on a cloud-based quantum computer via the IBM platform. URDD is a technique that can compensate for experimental errors and simultaneously protect the state against environmental noise. To further improve the performance of the URDD sequence
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The quantum accelerated PointNet algorithm Int. J. Quantum Inf. (IF 1.2) Pub Date : 2023-03-11 Peng-Jie Li, Xiao-Bin Li
Point cloud modeling is one of the most common types of 3D modeling, and the PointNet algorithm is an effective point cloud classification and segmentation algorithm. We propose the quantum accelerated PointNet algorithm. The proposed algorithm uses quantum computing to realize the three convolutional layers of the PointNet algorithm and uses classical computers to realize the pooling layers, the fully
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Spatial search algorithms on graphs with multiple targets using discrete-time quantum walk Int. J. Quantum Inf. (IF 1.2) Pub Date : 2023-03-11 Xi-Ling Xue, Zhi-Hong Sun, Yue Ruan, Xue Li
Search algorithms based on discrete-time quantum walk (QW) can be considered as alterations of the standard QW: Use a different coin operator that distinguishes target and nontarget vertices, or, mark the target vertices first followed by the standard QW. Two most frequently used marking coins are −I and D the negative identity operator and the negative Grover diffusion operator. We show that search
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An investigation of continuous-time quantum walk on hypercube in view of Cartesian product structure Int. J. Quantum Inf. (IF 1.2) Pub Date : 2023-03-11 Qi Han, Yaxin Kou, Huan Wang, Ning Bai
In this paper, continuous-time quantum walk on hypercube is discussed in view of Cartesian product structure. We find that the n-fold Cartesian power of the complete graph K2 is the n-dimensional hypercube, which give us new ideas for the study of quantum walk on hypercube. Combining the product structure, the spectral distribution of the graph and the quantum decomposition of the adjacency matrix
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Chaotic dynamics of a quantum Cournot duopoly game with heterogeneous expectations Int. J. Quantum Inf. (IF 1.2) Pub Date : 2023-03-11 Yuhuai Zhang, Jing Yuan, Yili Zhang
On the basis of the bounded rationality and adaptive expectations, we investigate the dynamics of quantum Cournot duopoly game with heterogeneous players by using the Li et al. scheme. Further, we discuss the effect of quantum entanglement on local stability of the system. The results show that: (i) The special form of quantum Cournot duopoly game is the classical Cournot duopoly game, and the quantum
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Identical damped harmonic oscillators described by coherent states Int. J. Quantum Inf. (IF 1.2) Pub Date : 2023-03-09 S. V. Mousavi
Some aspects of quantum damped harmonic oscillator (DHO) obeying a Markovian master equation are considered in the absence of thermal noise. The continuity equation is derived and Bohmian trajectories are constructed. As a solution of the master equation, we take a single coherent state and compute analytically the relative entropy of coherence, Cr, in the energy, position and momentum bases. Although
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Exploring quantum properties of bipartite mixed states under coherent and incoherent basis Int. J. Quantum Inf. (IF 1.2) Pub Date : 2023-03-06 Sovik Roy, Anushree Bhattacharjee, Chandrashekar Radhakrishnan, Md. Manirul Ali, Biplab Ghosh
Quantum coherence and quantum entanglement are two different manifestations of the superposition principle. In this paper, we show that the right choice of basis to be used to estimate coherence is the separable basis. The quantum coherence estimated using the Bell basis does not represent the coherence in the system, since there is a coherence in the system due to the choice of the basis states. We
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The temperature dependence on the coherence time of a quantum pseudodot qubit Int. J. Quantum Inf. (IF 1.2) Pub Date : 2023-02-28 Wei Qiu, Xiu-Juan Miao, Shuang Han, Wei Zhang, Xin-Jun Ma, Yong Sun, Jing-Lin Xiao
In this work, the energies and eigenfunctions of ground state and first-excited states (GFES) of a strongly coupled polaron in a quantum pseudo-dot (QPD) were studied by using variational method of Pekar type (VMPT). A single qubit can be realized in this two-level quantum system. Then, we calculated the coherence time of a QPD qubit by employing the Fermi Golden Rule. The temperature effects on the
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Scalable quantum computation based on nitrogen-vacancy centers in decoherence-free subspace Int. J. Quantum Inf. (IF 1.2) Pub Date : 2023-02-22 Yi You, Zhong Ding, Yong Zhang
Due to its unique optical properties, nitrogen-vacancy centers in diamond show remarkable advantages in realizing quantum information processing and computation. This paper proposes a scalable quantum computing architecture based on solid-state NV centers. In our scheme, logical qubits are encoded in a decoherence-free subspace (DFS) with Larmor pairs (a pair of the nucleus). And the connection between
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Can quantum nonlocality be connected to extra dimensions? Int. J. Quantum Inf. (IF 1.2) Pub Date : 2023-02-18 Marco Genovese
Quantum nonlocality, as described by Einstein–Podolsky–Rosen (EPR) paradox, represents one of the mysteries at the very foundations of quantum mechanics. Here, we suggest to investigate if it can be understood by considering extra dimensions.
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Minimal scenario facet Bell inequalities for multi-qubit states Int. J. Quantum Inf. (IF 1.2) Pub Date : 2023-02-18 Arpan Das, Chandan Datta, Pankaj Agrawal
Facet inequalities play an important role in detecting the nonlocality of a quantum state. The number of such inequalities depends on the Bell test scenario. With the increase in the number of parties, measurement outcomes, or/and the number of measurement settings, there are more nontrivial facet inequalities. For several Bell scenarios, by involving two dichotomic measurement settings for two parties
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Entanglement recovery in noisy binary quantum information protocols via three-qubit quantum error correction codes Int. J. Quantum Inf. (IF 1.2) Pub Date : 2023-02-13 Alessio Morea, Michele N. Notarnicola, Stefano Olivares
The task of preserving entanglement against noises is of crucial importance for both quantum communication and quantum information transfer. To this aim, quantum error correction (QEC) codes may be employed to compensate, at least partially, the detriments induced by environmental noise that can be modeled as a bit-flip or a phase-flip error channel. In this paper, we investigate the effects of the
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Simulating the Hamiltonian of dimer atomic spin model of one-dimensional optical lattice on quantum computers Int. J. Quantum Inf. (IF 1.2) Pub Date : 2023-02-13 Sudev Pradhan, Amlandeep Nayak, Sritam Kumar Satpathy, Tanmaya Shree Behera, Ankita Misra, Debashis Swain, Bikash K. Behera
The one-dimensional Ising model with its connections to several physical concepts plays a vital role in comprehension of several principles, phenomena and numerical methods. The Hamiltonian of a coupled one-dimensional dissipative spin system in the presence of magnetic field can be obtained from the Ising model. We simulate the above Hamiltonian by designing a quantum circuit with precise gate measurement