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Soft decoding of short/medium length codes using ordered statistics for quantum key distribution Int. J. Quantum Inf. (IF 0.89) Pub Date : 20210920
Maqsood M. Khan, Inam Bari, Omar Khan, Najeeb Ullah, Marina Mondin, Fred DaneshgaranQuantum key distribution (QKD) is a cryptographic communication protocol that utilizes quantum mechanical properties for provable absolute security against an eavesdropper. The communication is carried between two terminals using random photon polarization states represented through quantum states. Both these terminals are interconnected through disjoint quantum and classical channels. Information

Nonlocal quantum computing theory and Poincare cycle in spherical states Int. J. Quantum Inf. (IF 0.89) Pub Date : 20210915
C. H. Wu, Andrew Van HornFour new fundamental nonlocal quantum computing diagonal operatorstate relations are derived which model the interaction between two adjacent atoms of an entangled atomic chain. Each atom possesses four eigenstates. These relations lead to four momentumspace cyclic transformations and are used as the computation states in onedimensional cellular automaton. Four interacting halfobservable periodic

Local quantum uncertainty versus negativity through Gisin states Int. J. Quantum Inf. (IF 0.89) Pub Date : 20210908
A. Sbiri, M. Mansour, Y. OuloudaWe investigate the pairwise quantum correlations in standard Gisin states and in Gisin states based on bipartite spincoherent states by employing quantum negativity and quantum local uncertainty as bona fide quantum correlations measures. Gisin states are defined as mixtures of separable mixed states and some pure entangled ones. We compare the behavior of the two quantifiers of Gisin states and we

A quantum edge detection algorithm for quantum multiwavelength images Int. J. Quantum Inf. (IF 0.89) Pub Date : 20210715
Engin Şahin, İhsan YilmazQuantum edge detection is one of the important part of quantum image processing. In this paper, a quantum edge detection algorithm is designed for the quantum representation of multiwavelength image (QRMW) model. The algorithm includes all stages of filtering, enhancement and detection. The proposed algorithm is also designed to apply any filtering operation to QRMW images, not only for a particular

Bell inequalities, counterfactual definiteness and falsifiability Int. J. Quantum Inf. (IF 0.89) Pub Date : 20210726
Justo Pastor LambareWe formally prove the existence of an enduring incongruence pervading a widespread interpretation of the Bell inequality and explain how to rationally avoid it with a natural assumption justified by explicit reference to a mathematical property of Bell’s probabilistic model. Although the amendment does not alter the relevance of the theorem regarding local realism, it brings back Bell theorem from

A bound on expectation values and variances of quantum observables via Rényi entropy and Tsallis entropy Int. J. Quantum Inf. (IF 0.89) Pub Date : 20210729
Sujuan Zhang, Jing LiEntropy is a key concept of quantum information theory. The entropy of a quantum system is a measure of its randomness and has many applications in quantum communication protocols, quantum coherence, and so on. In this paper, based on the Rényi entropy and Tsallis entropy, we derive the bounds of the expectation value and variance of a quantum observable. By the maximal value of Rényi entropy, we show

Modular quantum computing and quantumlike devices Int. J. Quantum Inf. (IF 0.89) Pub Date : 20210819
R. Vilela MendesThe two essential ideas in this paper are, on the one hand, that a considerable amount of the power of quantum computation may be obtained by adding to a classical computer a few specialized quantum modules and on the other hand, that such modules may be constructed out of classical systems obeying quantumlike equations where a space coordinate is the evolution parameter (thus playing the role of

Productform monogamy relations of entanglement in multiqubit systems Int. J. Quantum Inf. (IF 0.89) Pub Date : 20210820
JiaBin Zhang, Tao Li, ZhiXi WangMonogamy relations of entanglement play an important role in quantum systems, however, most of them are given in summation form. In this paper, we investigate the productform monogamy relations of multipartite entanglement in terms of the αth power of concurrence and negativity. Compared with the existing monogamy relations, the productform monogamy relations of multibody quantum entanglement have

Modern compressive tomography for quantum information science Int. J. Quantum Inf. (IF 0.89) Pub Date : 20210819
Yong Siah Teo, Luis L. SánchezSotoThis review serves as a concise introductory survey of modern compressive tomography developed since 2019. These are schemes meant for characterizing arbitrary lowrank quantum objects, be it an unknown state, a process or detector, using minimal measuring resources (hence compressive) without any a priori assumptions (rank, sparsity, eigenbasis, etc.) about the quantum object. This paper contains

Thermal entanglement in a mixed spin Heisenberg XXX chain with DM interaction Int. J. Quantum Inf. (IF 0.89) Pub Date : 20210819
Nizar Ahami, Morad El BazWe consider a onedimensional, mixed spin Heisenberg XXX model with an homogeneous external magnetic field and Dzyaloshinskii–Moriya interaction. Alternating spin12 and spin1 particles are forming the chain. The effect of the different parameters of the system on the bipartite thermal entanglement is studied. The type of chain used (mixed) and the size of the chain (N=5) allow to study three types

3D topological quantum computing Int. J. Quantum Inf. (IF 0.89) Pub Date : 20210724
Torsten AsselmeyerMalugaIn this paper, we will present some ideas to use 3D topology for quantum computing extending ideas from a previous paper. Topological quantum computing used “knotted” quantum states of topological phases of matter, called anyons. But anyons are connected with surface topology. But surfaces have (usually) abelian fundamental groups and therefore one needs nonAbelian anyons to use it for quantum computing

A complete restricted Boltzmann machine on an adiabatic quantum computer Int. J. Quantum Inf. (IF 0.89) Pub Date : 20210710
Lorenzo Rocutto, Enrico PratiBoltzmann Machines constitute a paramount class of neural networks for unsupervised learning and recommendation systems. Their bipartite version, called Restricted Boltzmann Machine (RBM), is the most developed because of its satisfactory tradeoff between computability on classical computers and computational power. Though the diffusion of RBMs is quite limited as their training remains hard. Recently

A continuous rosenblatt quantum perceptron Int. J. Quantum Inf. (IF 0.89) Pub Date : 20210630
Marco Maronese, Enrico PratiQuantum neural networks are expected to provide the theoretical framework to implement machine learning on quantum computers. We develop a continuous Rosenblatt quantum perceptron which represents the generalization of the McCulloch–Pitts quantum perceptron existing in the literature. We implement its quantum circuit on a IBM quantum computer.

Using deep learning for digitally controlled STIRAP Int. J. Quantum Inf. (IF 0.89) Pub Date : 20210630
Lorenzo Moro, Iris Paparelle, Enrico PratiStimulated Raman Adiabatic Passage (STIRAP) is a technique for preparing atoms and molecules in an arbitrary preselected coherent superposition of quantum states, ordinarily controlled by Gaussian laser pulses. We search novel pulse sequences by exploiting deep reinforcement learning algorithms in order to achieve fast and flexible solutions for integer and fractional STIRAP. By using the robustness

Theory of machine learning based on nonrelativistic quantum mechanics Int. J. Quantum Inf. (IF 0.89) Pub Date : 20210621
Huber NietoChaupisThe goal of this paper is the presentation of the elementary procedures that normally are done in nonrelativistic Quantum Mechanics in terms of the principles of Machine Learning. In essence, this paper discusses Mitchell’s criteria, whose block fundamental dictates that the universal evolution of any system is composed by three fundamental steps: (i) Task, (ii) Performance and (iii) Experience. In

Analytic view on N body interaction in electrostatic quantum gates and decoherence effects in tightbinding model Int. J. Quantum Inf. (IF 0.89) Pub Date : 20210609
Krzysztof PomorskiAnalytical solutions describing quantum swap and Hadamard gate are given with the use of tightbinding approximation. Decoherence effects are described analytically for 2 interacting electrons confined by local potentials with use of tightbinding simplistic model and in Schroedinger formalism with omission of spin degree of freedom. The obtained results can be generalized for the case of N electrostatically

Discretetime quantum walk on circular graph: Simulations and effect of gate depth and errors Int. J. Quantum Inf. (IF 0.89) Pub Date : 20210525
Iyed Ben Slimen, Amor Gueddana, Vasudevan LakshminarayananWe investigate the counterparts of random walks in universal quantum computing and their implementation using standard quantum circuits. Quantum walks have been recently well investigated for traversing graphs with certain oracles. We focus our study on traversing a 1D graph, namely a circle, and show how to implement a discretetime quantum walk in quantum circuits built with universal CNOT and single

The landscape of academic literature in quantum technologies Int. J. Quantum Inf. (IF 0.89) Pub Date : 20210506
Zeki C. Seskir, Arsev U. AydinogluIn this study, we investigated the academic literature on quantum technologies (QT) using bibliometric tools. We used a set of 49,823 articles obtained from the Web of Science (WoS) database using a search query constructed through expert opinion. Analysis of this revealed that QT is deeply rooted in physics, and the majority of the articles are published in physics journals. Keyword analysis revealed

Ququats as superposition of coherent states and their application in quantum information processing Int. J. Quantum Inf. (IF 0.89) Pub Date : 20210430
Manoj K. Mishra, Hari Prakash, Vibhuti B. JhaSuperposition of optical coherent states (SCS) ±α〉, possessing opposite phases, plays an important role as qubits in quantum information processing tasks like quantum computation, teleportation, key distribution, etc. and are of fundamental importance in testing quantum mechanics. Passage of such SCS from a 50:50 beam splitter leads to generation of entangled coherent states. Recently, ququats and

A new construction of mutually unbiased maximally entangled bases in ℂq⊗ℂq Int. J. Quantum Inf. (IF 0.89) Pub Date : 20210506
Dengming Xu, Feiya Li, Wei HuThis paper is devoted to constructing mutually unbiased maximally entangled bases (MUMEBs) in ℂq⊗ℂq, where q is a prime power. We prove that M(q,q)≥q2−q+1 when q is even, and M(q,q)≥q2−q+2 when q is odd, where M(q,q) is the maximal size of the sets of MUMEBs in ℂq⊗ℂq. This highly raises the lower bounds of M(q,q) given in D. Xu, Quant. Inf. Process.18(7) (2019) 213; D. Xu, Quant. Inf. Process.19(6)

High success perfect transmission of 1qubit information using purposefully delayed sharing of nonmaximally entangled 2qubit resource and repeated generalized Bellstate measurements Int. J. Quantum Inf. (IF 0.89) Pub Date : 20210511
Shamiya Javed, Ranjana Prakash, Hari PrakashWe propose a new scheme in which perfect transmission of 1qubit information is achieved with high success using purposefully delayed sharing of nonmaximally entangled 2qubit resource and repeated generalized Bellstate measurements (GBSM). Alice possesses initially all qubits and she makes repeated GBSM on the pair of qubits, consisting of (1) the qubit of information state and (2) one of the two

New entanglementassisted quantum MDS codes Int. J. Quantum Inf. (IF 0.89) Pub Date : 20210531
Binbin Pang, Shixin Zhu, Liqi WangEntanglementassisted quantum errorcorrecting codes (EAQECCs) can be obtained from arbitrary classical linear codes based on the entanglementassisted stabilizer formalism, which greatly promoted the development of quantum coding theory. In this paper, we construct several families of qary entanglementassisted quantum maximumdistanceseparable (EAQMDS) codes of lengths n(q2−1) with flexible parameters

A localrealistic quantum mechanical model of spin and spin entanglement Int. J. Quantum Inf. (IF 0.89) Pub Date : 20210325
Antonio SciarrettaThis paper aims at reproducing quantum mechanical (QM) spin and spin entanglement results using a realist, stochastic, and local approach, without the standard QM mathematical formulation. The concrete model proposed includes the description of Stern–Gerlach apparatuses and of Bell test experiments. Single particle trajectories are explicitly evaluated as a function of a few stochastic variables that

Enhancing entanglement of twoqubit states from amplitude damping channel using singlequbit unitary operation and local filtering operation Int. J. Quantum Inf. (IF 0.89) Pub Date : 20210408
XiaoLan Zong, Wei Song, Ming Yang, ZhuoLiang CaoWe propose a scheme to enhance entanglement from amplitude damping or correlated amplitude damping decoherence. We show that entanglement sudden death time can be prolonged by the initial singlequbit operation combined with local filtering operation. For the amplitude damping channel case, we give the optimal singlequbit operation for arbitrary pure state α00〉+β11〉. For the correlated amplitude

Correlation between the continuoustime quantum walk and cliques in graphs and its application Int. J. Quantum Inf. (IF 0.89) Pub Date : 20210422
Mingyou Wu, Xi Li, Zhihao Liu, Hanwu ChenThe continuoustime quantum walk (CTQW) provides a new approach to problems in graph theory. In this paper, the correlation between the CTQW and cliques in graphs is studied, and an approximate algorithm for the maximum clique problem (MCP) based on the CTQW is given. Via both numerical and theoretical analyses, it is found that the maximum clique is related to the transmission characteristics of the

Intercept/resend and translucent attacks on the quantum key distribution protocol based on the pre and postselection effect Int. J. Quantum Inf. (IF 0.89) Pub Date : 20210422
Hiroo Azuma, Masashi BanWe investigate the security against the intercept/resend and translucent attacks on the quantum key distribution protocol based on the pre and postselection effect. In 2001, Bub proposed the quantum cryptography scheme, which was an application of the socalled mean king’s problem. We evaluate a probability that legitimate users cannot detect eavesdropper’s malicious acts for Bub’s protocol. We also

Performance of referenceframeindependent quantum key distribution in underwater channel Int. J. Quantum Inf. (IF 0.89) Pub Date : 20210421
Zhongqi Sun, Jipeng Wang, Zhenhua Li, Wenxiu Qu, Tianqi Dou, Fen Zhou, Haiqiang MaDuring freespace quantum key distribution, the rotation and fluctuation of reference frame degrades the performance of quantum key distribution (QKD). Referenceframeindependent QKD (RFIQKD) overcomes this issue effectively. To date, much theoretical and experimental research has been conducted on the performance of freespace RFIQKD. However, these studies are all based on freespace air and satellite

A note on the degree conjecture for separability of multipartite quantum states Int. J. Quantum Inf. (IF 0.89) Pub Date : 20210205
Zhen Wang, MingJing Zhao, ZhiXi WangThe degree conjecture for bipartite quantum states which are normalized graph Laplacians was first put forward by Braunstein et al. [Phys. Rev. A 73 (2006) 012320]. The degree criterion, which is equivalent to PPT criterion, is simpler and more efficient to detect the separability of quantum states associated with graphs. Hassan et al. settled the degree conjecture for the separability of multipartite

Complementary measurementinduced quantum uncertainty based on metric adjusted skew information Int. J. Quantum Inf. (IF 0.89) Pub Date : 20210220
Bin Chen, ShaoMing FeiWe investigate complementary measurementinduced quantum uncertainty based on metric adjusted skew information, and propose two new measures of quantum uncertainty associated with mutually unbiased measurements and general symmetric informationally complete measurements, respectively. Based on these measures of quantum uncertainty, we present two entanglement criteria and show that they detect better

Controlling nonclassical properties of optomechanical systems under the Coulomb interaction effect Int. J. Quantum Inf. (IF 0.89) Pub Date : 20210303
Abderrahim Lakhfif, Jamal El Qars, Mostafa NassikIn an optomechanical system consisting of two Fabry–Pérot cavities fed by squeezed light and coupled via Coulomb interaction, we respectively use the logarithmic negativity, Gaussian discord and Gaussian coherence to analyze the behavior of three different indicators of nonclassicality, namely the entanglement, quantum discord and quantum coherence. We perform the rotating wave approximation and work

Sandwiched Rényi relative entropy on density operators Int. J. Quantum Inf. (IF 0.89) Pub Date : 20210303
Ting Zhang, Xiaofei QiRelative entropies play important roles in classical and quantum information theory. In this paper, we discuss the sandwiched Rényi relative entropy for α∈(0,1) on 𝒯(H)+ (the cone of positive traceclass operators acting on an infinitedimensional complex Hilbert space H) and characterize all surjective maps preserving the sandwiched Rényi relative entropy on 𝒯(H)+. Such transformations have the

Gaussian–Rényi2 correlations hierarchy in optomechanics Int. J. Quantum Inf. (IF 0.89) Pub Date : 20210320
B. Maroufi, J. El Qars, M. DaoudIn a twomode Gaussian state ϱ̂AB, we report on stationary evolution of three measures of correlations defined via the Rényi2 entropy, i.e. quantum mutual information (QMI) ℐR,2, the Gaussian–Rényi2 entanglement (GR2E) ℰR,2 and Gaussian quantum steering (GQS) 𝒢. We evaluate analytical expression of the covariance matrix fully describing the state ϱ̂AB. Further, we study, under influences of parameters

Security analysis of KXB10 QKD protocol with higherdimensional quantum states Int. J. Quantum Inf. (IF 0.89) Pub Date : 20210317
Usama Ahsan, Muhammad Mubashir Khan, Asad Arfeen, Khadija AzamQuantum key distribution (QKD) is one of the exciting applications of quantum mechanics. It allows the sharing of secret keys between two communicating parties with unconditional security. A variety of QKD protocols have been proposed since the inception of the BB84 protocol. Among different implementation techniques of QKD protocols, there is a category which exploits higher dimensions qubit states

Improving parameter precision of estimation by noknowledge feedback control Int. J. Quantum Inf. (IF 0.89) Pub Date : 20210310
Huangyun Rao, XiaoZe HuangWe investigate a scheme to improve the precision of parameter estimation using noknowledge measurementbased feedback control. The scheme shows that combination of noknowledge measurementbased feedback control and quantum weak measurement is the optimal way to suppress decoherence. Our results indicate that compared with knowledge quantum feedback control, under the same weak measurement condition

Quantumstate estimation problem via optimal design of experiments Int. J. Quantum Inf. (IF 0.89) Pub Date : 20210224
Jun SuzukiIn this paper, we study the quantumstate estimation problem in the framework of optimal design of experiments. We first find the optimal designs about arbitrary qubit models for popular optimality criteria such as A, D, and Eoptimal designs. We also give the oneparameter family of optimality criteria which includes these criteria. We then extend a classical result in the design problem, the Kiefer–Wolfowitz

Highdimensional quantum state manipulation and tracking Int. J. Quantum Inf. (IF 0.89) Pub Date : 20201221
Mevludin LicinaDynamical highdimensional quantum states can be tracked and manipulated in many cases. Using a new theoretical framework approach of manipulating quantum systems, we will show how one can manipulate and introduce parameters that allow tracking and descriptive insight in the dynamics of states. Using quantum topology and other novel mathematical representations, we will show how quantum states behave

Steadystate quantum correlation measurement in hybrid optomechanical systems Int. J. Quantum Inf. (IF 0.89) Pub Date : 20201229
Tesfay Gebremariam Tesfahannes, Merkebu Dereje GetahuneIn this paper, we investigate the steadystate of quantum correlation measurement of hybrid optomechanical systems. The first system consists of a single optomechanical system simultaneously coupled to a mechanical oscillator. While the second system is a hybrid optomechanical system consisting of an atomic ensemble placed in between the optical cavity and mirror. For both optomechanical systems, we

Introduction, generation and entanglement of entangled displaced even and odd squeezed states Int. J. Quantum Inf. (IF 0.89) Pub Date : 20210118
Amir KarimiIn this paper, first, we introduce special types of entangled quantum states named “entangled displaced even and odd squeezed states” by using displaced even and odd squeezed states which are constructed via the action of displacement operator on the even and odd squeezed states, respectively. Next, we present a theoretical scheme to generate the introduced entangled states. This scheme is based on

The chaotic dynamics of a quantum Cournot duopoly game with bounded rationality Int. J. Quantum Inf. (IF 0.89) Pub Date : 20200916
Xinli Zhang, Deshan Sun, Wei JiangThis paper analyzes the chaotic dynamics of a quantum Cournot duopoly game with bounded rational players by applying quantum game theory. We investigate the impact of quantum entanglement on the stability of the quantum Nash equilibrium points and chaotic dynamics behaviors of the system. The result shows that the stability region decreases with the quantum entanglement increasing. The adjustment speeds

Highdimensional quantum key distribution using polarizationphase encoding: security analysis Int. J. Quantum Inf. (IF 0.89) Pub Date : 20201023
Ali MehriToonabi, Mahdi Davoudi Darareh, Shahrooz JanbazIn this work, we introduce a highdimensional polarizationphase (PoP)based quantum key distribution protocol, briefly named PoP(d,M), where d is the dimension of a hybrid quantum state including polarization and phase degrees of freedom of the same photon, and M is the number of mutually unbiased bases. We present a detailed description of the PoP(4,2) protocol as a special case, and evaluate its

Design of quantum dot cellular automata based fault tolerant convolution encoders for secure nanocomputing Int. J. Quantum Inf. (IF 0.89) Pub Date : 20200922
Suhaib Ahmed, Syed Farah NazThe issues faced by Complementary metal oxide semiconductor (CMOS) technology in the nanoregime have led to the research of other possible technologies which can operate with same functionalities however, with higher speed and lower power dissipation. One such technology is Quantumdot Cellular Automata (QCA). At present, logic circuit designs using QCA have been comprehensively researched and one

Triggering parametricdown conversionbased quantum key distribution via radiation field Int. J. Quantum Inf. (IF 0.89) Pub Date : 20201021
Tchoffo Martin, Tene Alain Giresse, Djebayole Mimbe III YannickWe discuss the influence of radiation field on the secure key size and the maximum safety distance during QKD by using a set of photons produced via a spontaneous parametricdown conversion (SPDC) photon source. Four implementations that use multiplephotons and decoy states are discussed, these include nondecoy state, infinite active decoy state, passive decoy state with threshold detector and passive

A complex nonlinear approach for understanding quantum physics Int. J. Quantum Inf. (IF 0.89) Pub Date : 20201120
J. R. CrocaTo understand quantum phenomena, namely, the particlewave duality, in a causal relational way, a complex nonlinear process, in which a minor action may, under adequate conditions, give rise to a huge reaction, was proposed by de Broglie. The nonlinear process is mediated by the guiding or pilot wave principle, or as is now named by the principle of eurhythmy. This process rejects the ontic status

Online quantum state tomography of Nqubit via continuous weak measurement and compressed sensing Int. J. Quantum Inf. (IF 0.89) Pub Date : 20201030
Sajede Harraz, Shuang Cong, Kezhi LiIn this paper, we propose an online state tomography method for Nqubit quantum system based on the continuous weak measurement and compressed sensing (CS). The quantum system is described by stochastic master equation. The continuous weak measurement operators for the Nqubit quantum system, which are indirectly acted on the quantum system, are derived according to the measurement operator results

The varieties of minimal tomographically complete measurements Int. J. Quantum Inf. (IF 0.89) Pub Date : 20201027
John B. DeBrota, Christopher A. Fuchs, Blake C. StaceyMinimal Informationally Complete quantum measurements, or MICs, illuminate the structure of quantum theory and how it departs from the classical. Central to this capacity is their role as tomographically complete measurements with the fewest possible number of outcomes for a given finite dimension. Despite their advantages, little is known about them. We establish general properties of MICs, explore

Experimental demonstration of optimized quantum process tomography on the IBM quantum experience Int. J. Quantum Inf. (IF 0.89) Pub Date : 20201007
Akshay Gaikwad, Krishna Shende, Kavita DoraiWe experimentally performed complete and optimized quantum process tomography of quantum gates implemented on superconducting qubitbased IBM QX2 quantum processor via two constrained convex optimization (CCO) techniques: least squares optimization and compressed sensing optimization. We studied the performance of these methods by comparing the experimental complexity involved and the experimental

On the classical complexity of sampling from quantum interference of indistinguishable bosons Int. J. Quantum Inf. (IF 0.89) Pub Date : 20201001
V. S. ShchesnovichThe classical complexity of sampling from the probability distribution of quantum interference of $N$ indistinguishable single bosons on unitary network with $M$ input and output ports is studied with the focus on how density of bosons $\rho =\frac{N}{M}$ for $M\ge N$ affects the number of computations required to produce a single sample. First, Glynn's formula is modified for computation of probabilities

Distinguishing environmentinduced nonMarkovianity from subsystem dynamics Int. J. Quantum Inf. (IF 0.89) Pub Date : 20201001
Subhashish Banerjee, Javid Naikoo, R. SrikanthQuantum nonMarkovianity modifies the environmental decoherence of a system. This situation is enriched in complex systems owing to interactions among subsystems. We consider the problem of distinguishing the multiple sources of nonMarkovianity using a simple power spectrum technique, applied to a qubit interacting with another qubit via a JaynesCummings type Hamiltonian and simultaneously subjected

Two efficient measurement device independent quantum dialogue protocols Int. J. Quantum Inf. (IF 0.89) Pub Date : 20201001
Nayana Das, Goutam PaulQuantum dialogue is a process of two way secure and simultaneous communication using a single channel. Recently, a Measurement Device Independent Quantum Dialogue (MDIQD) protocol has been proposed (Quantum Information Processing 16.12 (2017): 305). To make the protocol secure against information leakage, the authors have discarded almost half of the qubits remaining after the error estimation phase

NonMarkovianity leading to coherence revivals in an open quantum system Int. J. Quantum Inf. (IF 0.89) Pub Date : 20201001
Y. Yugra, F. De ZelaCoherence and quantum correlations have been identified as fundamental resources for quantum information tasks. As recently shown, these resources can be interconverted. In multipartite systems, en...

Cryptanalysis and improvement of Wu–Cai–Wu–Zhang’s quantum private comparison protocol Int. J. Quantum Inf. (IF 0.89) Pub Date : 20201001
Guang Ping HeIn a recent paper (Int. J. Quantum Inf. 17 (2019) 1950026), the authors discussed the shortcomings in the security of a quantum private comparison protocol that we previously proposed. They also proposed a new protocol aimed to avoid these problems. Here we analysis the information leaked in their protocol, and find that it is even less secure than our protocol in certain cases. We further propose

Comment on “Quantum key agreement protocol” Int. J. Quantum Inf. (IF 0.89) Pub Date : 20201001
Nayana Das, Ritajit MajumdarThe first two party Quantum Key Agreement (QKA) protocol, based on quantum teleportation, was proposed by Zhou et al. (Electronics Letters 40.18 (2004): 11491150). In this protocol, to obtain the key bit string, one of the parties use a device to obtain inner product of two quantum states, one being unknown, and the other one performs Bell measurement. However, in this article, we show that it is

Digital quantum simulation of hadronization in Yang–Mills theory Int. J. Quantum Inf. (IF 0.89) Pub Date : 20200901
DeSheng Li, ChunWang Wu, Ming Zhong, Wei Wu, PingXing ChenA quantum algorithm with polynomial complexity to nonperturbatively calculate the Dyson series of SU(N) YangMills theory is formulated in terms of quantum circuits. Applying it to the quantum simulation of quantum chromodynamics (QCD), the quark and gluon's wave functions evolved from the initial states by the interactions can be observed and the information from wave functions can be extracted at

Quantum arithmetic operations based on quantum fourier transform on signed integers Int. J. Quantum Inf. (IF 0.89) Pub Date : 20200901
Engin ŞahinThe quantum Fourier transform brings efficiency in many respects, especially usage of resource, for most operations on quantum computers. In this study, the existing QFTbased and nonQFTbased quantum arithmetic operations are examined. The capabilities of QFTbased addition and multiplication are improved with some modifications. The proposed operations are compared with the nearest quantum arithmetic

Quantum simulation dynamics and circuit synthesis of FMO complex on an NMR quantum computer Int. J. Quantum Inf. (IF 0.89) Pub Date : 20200901
M. Mahdian, H. Davoodi Yeganeh, A. DehghaniRecently, the dynamics simulation of lightharvesting complexes as an open quantum system, in the weak and strong coupling regimes, has received much attention. In this paper, we investigate a digital quantum simulation approach of the FennaMatthewsOlson (FMO) photosynthetic pigmentprotein complex surrounded with a Markovian bath, i.e., memoryless, based on a nuclear magnetic resonance (NMR) quantum

Effects of entanglement on vortex dynamics in the hydrodynamic representation of quantum mechanics Int. J. Quantum Inf. (IF 0.89) Pub Date : 20200901
Satoya ImaiThe hydrodynamic representation of quantum mechanics describes virtual flow as if a quantum system were fluid in motion. This formulation illustrates pointlike vortices when the phase of a wavefunction becomes nonintegrable at nodal points. We study the dynamics of such pointlike vortices in the hydrodynamic representation for a twoparticle wavefunction. In particular, we discuss how quantum entanglement

Analysis of achievable distances of BB84 and KMB09 QKD protocols Int. J. Quantum Inf. (IF 0.89) Pub Date : 20200901
Muhammad Mubashir Khan, Asad Arfeen, Usama Ahsan, Saneeha Ahmed, Tahreem MumtazQuantum key distribution (QKD) is a proven secured way to transmit shared secret keys using quantum particles. Any adversarial attempt to intercept and eavesdrop secret key results in generating er...

Cohering and decohering power of Gaussian channels Int. J. Quantum Inf. (IF 0.89) Pub Date : 20200710
Huazhen Yao, Jianwen Zhang, Yangyang WangIn this paper, we generalized the concepts of the cohering power and decohering power to Gaussian channels for continuousvariable systems with respect to coherence measures based on the relative entropy and obtained some basic properties. In addition, the cohering power and decohering power of classical noise channels, thermal noise channels and amplifier channels are calculated.

Implementation of a quantum transfer learning approach to image splicing detection Int. J. Quantum Inf. (IF 0.89) Pub Date : 20200801
Angelina Gokhale, Mandaar B. Pande, Dhanya PramodIn this paper, we present an implementation of quantum transfer learning to blind and passive detection of image splicing forgeries. Though deep learning models are becoming increasingly popular fo...

Arbitration quantum signature protocol based on XOR encryption Int. J. Quantum Inf. (IF 0.89) Pub Date : 20200801
XiaoYi Zheng, Chang KuangThe invention discloses an arbitration quantum signature method based on XOR encryption. The method comprises a signer Alice, a receiver Bob, an arbiter Trent and a threeparticle GHZ state quantum key shared by the three parties, the threeparticle GHZ state is an entangled resource commonly used in quantum communication, and the signature method comprises the following steps: an initialization stage