-
Orbital angular momentum sensing of composite vortex light in a single-layer graphene system Laser Phys. Lett. (IF 1.7) Pub Date : 2024-02-26 S I S Al-Hawary, Farag M A Altalbawy, C Rodriguez-Benites, A Kumar, Wesam R Kadhum, N Zaurbekova, H A Abbas, S J Shoja, A Alawadi, R Sivaraman
This paper explores the impact of orbital angular momentum (OAM) in composite vortex light on the absorption and dispersion characteristics of a weak probe light interacting with a single-layer graphene system. Through systematic investigation, we demonstrate the exceptional control achievable over absorption and dispersion profiles by manipulating the OAM of light. Under resonance conditions for the
-
The violet laser irradiation influence on the dispersive properties of the PVA/MO composite thick Laser Phys. Lett. (IF 1.7) Pub Date : 2024-02-26 Sarah Maysam T, Nihal A AbdulWahhab, Addnan H Al-Arajiy
Polyvinyl alcohol (PVA) polymer, methyl orange (MO) and their composite was dissolved in water in order to prepare films with different thickness by casting method. The films were irradiated by a violet laser with a wavelength 405 nm for different times (0, 10, 20, 30 and 40) minute. The dispersion parameters were calculated before and after exposure to the laser using the Wemple–DiDomenico method
-
Weighted monogamy and polygamy relations Laser Phys. Lett. (IF 1.7) Pub Date : 2024-02-23 Yue Cao, Naihuan Jing, Yiling Wang
This research offers a comprehensive approach to strengthening both monogamous and polygamous relationships within the context of quantum correlations in multipartite quantum systems. We present the most stringent bounds for both monogamy and polygamy in multipartite systems compared to recently established relations. We show that whenever a bound is given (named it monogamy or polygamy), our bound
-
Flexible preparation of the W state via the GRAPE algorithm in a nanoring-quantum-dot system Laser Phys. Lett. (IF 1.7) Pub Date : 2024-02-22 Zhen Chen, Zhi-Cheng Shi, Jie Song, Bi-Hua Huang, Yan Xia
In this paper, we put forward a scheme for flexibly preparing W states in the presence of detunings and asymmetric couplings in a nanoring-quantum-dot (nanoring-QD) system. Based on the gradient ascent pulse engineering algorithm, the coupling strength modulation (CSM) and the energy level modulation (ELM) methods are proposed, respectively. In the CSM method, the waveforms of the coupling strengths
-
Sub-50 fs pulses generation from an all-fiber monolithic gain-managed nonlinear amplifier with CFBG-based pre-compressor Laser Phys. Lett. (IF 1.7) Pub Date : 2024-02-21 Qianglong Li, Feng Li, Hongjun Liu, Wei Zhao, Xue Cao, Hualong Zhao, Yishan Wang, Wenlong Wen, Jinhai Si
We demonstrate an all-fiber monolithic laser source from a gain-managed nonlinear (GMN) fiber amplifier with a CFBG-based pre-compressor that generates high-contrast pulses with a repetition rate of 80 MHz, average power of 1.6 W, and pulse duration of sub-50 fs. The compressed pulse quality can be optimized by tuning the parameters of the seed pulses injected into the GMN amplifier by controlling
-
Quasi-classical dynamics of a charged particle under conditions of ionization losses in a weak magnetic field Laser Phys. Lett. (IF 1.7) Pub Date : 2024-02-21 S V Sazonov
The quasi-classical dynamics of a charged particle in a weak magnetic field in the presence of dissipative losses caused by ionization of the medium is studied. The approximate approach proposed here is a generalization of the Caldirola—Kanai method for quantizing the translational motion of particles in dissipative media. It is shown that a weak curvature of a classical trajectory by the magnetic
-
Spatially varying optical characteristics in quantum-dot molecules through interdot tunneling Laser Phys. Lett. (IF 1.7) Pub Date : 2024-02-15 R O Saleh, M S Mohammed, S Askar, N S A Darwish, W R Kadhum, M L Shaghnab, A A Ibrahim, A Kumar, A Elawady, A A Omran
In this paper, we investigate the spatially dependent absorption characteristics in structurally asymmetric quantum-dot molecules (QDMs), characterized by four energy levels interacting with position-dependent beams and varying system parameters. We explore the effects of detuning, standing wave intensity, and the relative phase of applied fields on the absorption patterns within the medium. A diverse
-
Generative adversarial neural network for 3D-hologram reconstruction Laser Phys. Lett. (IF 1.7) Pub Date : 2024-02-14 Semen A Kiriy, Dmitry A Rymov, Andrey S Svistunov, Anna V Shifrina, Rostislav S Starikov, Pavel A Cheremkhin
Neural-network-based reconstruction of digital holograms can improve the speed and the quality of micro- and macro-object images, as well as reduce the noise and suppress the twin image and the zero-order. Usually, such methods aim to reconstruct the 2D object image or amplitude and phase distribution. In this paper, we investigated the feasibility of using a generative adversarial neural network to
-
Quench dynamics of a Tonks-Girardeau gas in one dimensional anharmonic trap Laser Phys. Lett. (IF 1.7) Pub Date : 2024-02-12 Pankaj Kumar Debnath, Barnali Chakrabarti, Mantile Leslie Lekala
The quench dynamics of strongly interacting bosons on quartic and sextic traps are studied by exactly solving the time-dependent many-boson Schrödinger equation numerically. The dynamics are addressed by the key measures of one-body density in conjugate space and information entropy. For both cases, rich many-body dynamics are exhibited and the loss of the Bose–Fermi oscillation in the Tonks–Girardeau
-
Knob of adjusting light group velocity in an inhomogeneously broadened degenerate two-level atomic medium by a magnetic field Laser Phys. Lett. (IF 1.7) Pub Date : 2024-02-07 Anh Nguyen Tuan, Thanh Thai Doan, Bang Nguyen Huy, Nga Luong Thi Yen, Dong Hoang Minh
We proposed a simple model for investigating subluminal and superluminal light propagation via an external magnetic field in an inhomogeneously broadened degenerate two-level atomic medium. We show that a magnetic field can be utilized as a knob to control the absorption/dispersion properties and group index of the medium. By changing the magnitude and reversing the direction of the magnetic field
-
One-way semi-quantum private comparison protocol without pre-shared keys based on unitary operations Laser Phys. Lett. (IF 1.7) Pub Date : 2024-02-02 Li-Hua Gong, Zi-Jie Ye, Chao Liu, Shun Zhou
Semi-quantum private comparison is a method for private comparison with fewer quantum resources, enabling classical participants to collaborate with a semi-honest third party possessing complete quantum capabilities. A one-way quantum private comparison protocol is devised only by unitary operations. The protocol facilitates one-way transmission between third party (TP) and classical participants in
-
THz transition radiation of electron bunches laser-accelerated in long-scale near-critical-density plasmas Laser Phys. Lett. (IF 1.7) Pub Date : 2024-02-01 D A Gorlova, I N Tsymbalov, I P Tsygvintsev, A B Savelev
Direct laser electron acceleration in near-critical density plasma produces collimated electron beams with high charge Q (up to µC). This regime could be of interest for high-energy THz radiation generation, as many of the mechanisms have a scaling ∝Q2 . In this work, we focus specifically on the challenges that arise during numerical investigations of transition radiation in such interactions. Detailed
-
High-quality random bit generation based on a cascade-coupled nano-laser system Laser Phys. Lett. (IF 1.7) Pub Date : 2024-01-29 G P Liu, P H Mu, G Guo, X T Liu, G S Hu
In this paper, a novel method is proposed to generate high-quality chaotic signals using three cascade-coupled nano-lasers (NLs), and generate high-speed, high-quality random number sequences. The master NL (MNL) is subjected to optical feedback, and its output is injected into the intermediate NL (INL), which is further injected into the slave NL (SNL). In the simulation, we first adjust proper parameters
-
One-step additive LIFT printing of conductive elements Laser Phys. Lett. (IF 1.7) Pub Date : 2024-01-24 Alena Nastulyavichus, Sergey Kudryashov, Svetlana Shelygina, Evgenia Ulturgasheva, Irina Dzhun, Polina Krikunova, Тatiana Pallaeva, Pham Hong Minh, Pham Van Duong, Sergey Gonchukov
The feasibility of printing silver and copper conductive elements on a glass substrate in a one- step through the laser-induced forward transfer method has been successfully demonstrated. The topography of the resulting elements was analyzed, using scanning electron microscopy. Investigation of their chemical composition was conducted by means of energy-dispersive x-ray spectroscopy and x-ray diffraction
-
A public-key quantum group blind signature scheme based on single-qubit rotations Laser Phys. Lett. (IF 1.7) Pub Date : 2024-01-24 Fuyao Tian, Dianjun Lu, Chengxiang Wang, Weixin Yao
With the continuous development of quantum technology, the quantum signature as an application of quantum cryptography has received great attention. In this paper, we propose a public-key quantum group blind signature scheme based on single-qubit rotations. In this scheme, the group manager generates a public key. Each group member randomly generates his own private key according to the public key
-
Enhancing quantum features and teleportation fidelity of two-mode non-Gaussian states using conditional measurements Laser Phys. Lett. (IF 1.7) Pub Date : 2024-01-24 Minh Duc Truong, Quang Dat Tran
The family of two-mode non-Gaussian entangled states, including the pair coherent states (PCSs) and their genealogies, has been extensively investigated regarding their quantum properties and their practical applications in quantum information. Specifically, certain states, such as the multiphoton catalytic pair coherent states (MCPCSs), have been newly introduced under specific experimental conditions
-
Decoherence-induced cross-Kerr nonlinearity for quantum entanglement Laser Phys. Lett. (IF 1.7) Pub Date : 2024-01-22 Zhicai Chen, Fei Wang
In this paper, we show that the cross-Kerr nonlinearity is induced by the ground-state decoherence in a Λ system even under the exact one- and two-photon resonance conditions, which is attributed to the fact that the dark-state resonance is broken slightly. By adiabatically eliminating the atomic variables, we find that the decoherence results in a frequency shift of cavity detuning and the two cavity
-
Machine-learning-based mapping of blood oxygen saturation from dual-wavelength optoacoustic measurements Laser Phys. Lett. (IF 1.7) Pub Date : 2024-01-19 D A Kurakina, M Yu Kirillin, A V Khilov, V V Perekatova
We developed a novel machine-learning-based algorithm based on a gradient boosting regressor for three-dimensional pixel-by-pixel mapping of blood oxygen saturation based on dual-wavelength optoacoustic data. Algorithm training was performed on in silico data produced from Monte-Carlo-generated absorbed light energy distributions in tissue-like vascularized media for probing wavelengths of 532 and
-
Intracavity heterodyne laser interferometry. Studies of the features of optical Kerr effect in the atmosphere Laser Phys. Lett. (IF 1.7) Pub Date : 2024-01-18 V M Gelikonov, M A Novikov
The features of high-sensitivity frequency and phase measurements in a He–Ne gas laser at a wavelength of 0.63 μm are considered. The single-frequency mode of this laser with a large excess of the lasing threshold is implemented due to longitudinal mode selection using an ultra-thin nickel metal film placed in the standing field node of the cavity. With such an excess of the lasing threshold, the natural
-
Quantum coherence and Rényi mutual information in Heisenberg XYZ system under non-uniform field Laser Phys. Lett. (IF 1.7) Pub Date : 2024-01-18 Biaoliang Ye, Zhanjun Zhang
We investigate the thermal and magnetic quantum coherence in the Heisenberg XYZ system. To accomplish this, we employ three measures: the L1 norm coherence, the relative entropy coherence, and the Rényi mutual information (RMI). By performing these measures, we can accurately describe the quantum behaviors of the Heisenberg XYZ system. During the process of characterization, we have found both similarities
-
Non-stationary quasi-classical states of a charged particle in a strong magnetic field under conditions of the dissipative medium Laser Phys. Lett. (IF 1.7) Pub Date : 2024-01-18 S V Sazonov
Based on the quasi-classical approximation, a general approach is proposed for constructing non-stationary quantum states of a charged particle in a magnetic field, when the dissipative forces of viscous friction and drag, proportional to the velocity and the square of the velocity, respectively, are also significant. The corresponding quasi-classical Green’s function is found, with the help of which
-
Comparative analytical and numerical investigation of the plasma density in atmospheric air generated by nanosecond laser pulses Laser Phys. Lett. (IF 1.7) Pub Date : 2024-01-18 H Delibašić Marković, K Kaleris, N A Papadogiannis, V Petrović
Energy deposition via laser-induced breakdown (LIB) in gases or other media and its accompanying secondary light and sound radiative processes are nowadays increasingly deployed in scientific and technological applications. The modeling and control of the breakdown and radiative processes occurring by the interactions of the free electrons with the heavy particles in the partially ionized medium, requires
-
The influence of heating on the appearance of polarization singularities during the self-action of a Gaussian beam in the isotropic phase of a nematic liquid crystal in the pre-transition temperature region Laser Phys. Lett. (IF 1.7) Pub Date : 2024-01-12 G M Shishkov, K S Grigoriev, V A Makarov
Heating of the medium occurs during the self-action of elliptically polarized light in the isotropic phase of a nematic liquid crystal near the transition temperature to the mesophase. We studied the influence of heating of the medium, on the propagation modes of laser radiation and the dynamics of the formation of singularity lines of circular polarization in the cross sections of the beam, which
-
Efficient noiseless linear amplification protocol for single-photon state using imperfect auxiliary photon source Laser Phys. Lett. (IF 1.7) Pub Date : 2024-01-12 Jing-Qiu Gu, Ya-Peng Feng, Ming-Ming Du, Wei Zhong, Yu-Bo Sheng, Lan Zhou
Noiseless linear amplification (NLA) is a crucial method to solve the photon transmission loss problem. However, most NLA protocols require an ideal auxiliary single-photon source, which is unavailable under current experimental condition. Meanwhile, their heralded amplification performance is relatively low. For enhancing the feasibility and amplification performance of the NLA, in this paper, we
-
Mode-locked Yb:CALGO laser with high peak power sub-100 fs pulses at 26.9 MHz repetition rate Laser Phys. Lett. (IF 1.7) Pub Date : 2024-01-11 Md A R Reza, A Major
The development of a diode-pumped high peak power sub-100 fs mode-locked Yb:CALGO laser is presented. The laser delivered 1.3 W of output power with 81 fs pulses at a repetition rate of 26.9 MHz. The corresponding pulse energy was 48 nJ and the peak power was 596 kW. The cavity was extended by using a 1:1 imaging telescope. Mode locking was based on a semiconductor saturable absorber mirror and chirped
-
Effect of burst mode modulation ultrashort pulse laser on the laser processing transparent dielectrics Laser Phys. Lett. (IF 1.7) Pub Date : 2024-01-10 M A Murzakov, N N Evtikhiev, N V Grezev, D M Kataev, A S Shchekin
The effect of ultrashort pulse modulation on the formation of a modified zone of a transparent dielectric was investigated. The use of a femtosecond fiber laser in burst mode made it possible to control the energy that enters the processed material and thereby influence the geometry of the modification zone. In the course of the study, various types of pulses were tested—linear, sinusoidal, exponential
-
Tunable Yb:GdCOB self-frequency-doubling cyan laser Laser Phys. Lett. (IF 1.7) Pub Date : 2024-01-10 Zhenhua Du, Zonghua Hu, Yuzhao Li, Nguyen Tuan Anh, Xinhua Fu, Baozeng Li, Junwen Bai
We report a solid-state laser-pumped Yb:GdO(BO3)3 (Yb:GdCOB) tunable self-frequency-doubling continuous wave (CW) cyan laser. By adjusting the pump power, a CW cyan laser emission was obtained with wavelengths shifting from 502 nm to 506 nm. The highest output power of 835 mW was achieved at an emission wavelength with an optical conversion efficiency of 5.8%. To the best of our knowledge, there have
-
Quantum teleportation of a two-qubit arbitrary entangled state with four-qubit cluster state Laser Phys. Lett. (IF 1.7) Pub Date : 2024-01-10 Hao Yuan, Min Kong, Guo-Zhu Pan, Gang Zhang
Based on the four-qubit cluster state as quantum channel, we put forward a novel scheme for teleporting a two-qubit arbitrary entangled state. The necessary quantum operations for accomplishing the task are two controlled-not gate operations, one controlled-phase gate operation, four single-qubit measurements and two single-qubit transformed operations. They are easily achievable with current experimental
-
Circular semi-quantum secret sharing based on hybrid single particle and GHZ-type states Laser Phys. Lett. (IF 1.7) Pub Date : 2024-01-10 Yan-Yan Hou, Tao Xu, Jian Li, Chong-Qiang Ye, Zhuo Wang, Xin-Yu Liu
Semi-quantum secret sharing (SQSS) is a branch of quantum cryptography, with the advantage of fewer quantum resources. In this paper, we present a SQSS protocol based on hybrid single particle and GHZ-type states. Our protocol adopts circular transport structure to share secret information between classical and quantum parties, employing the entanglement correlation and uncertainty of GHZ-type states
-
Coherent control of parametric generation of laser beams via intersubband transitions in quantum wells Laser Phys. Lett. (IF 1.7) Pub Date : 2024-01-09 K M Batoo, S M Husein Kamona, Sh H Zaki, H A Lafta, S Hussain, W M Khazaal, A H M Hamoody, A H Abdulkadhim, M L Shaghnab, F A Rasen, A Alawadi, A Alsalamy
This paper investigates the propagation dynamics of laser beams within a semiconductor quantum well (QW) system. The study explores various scenarios involving different detuning values and spatially varying incident beams. The light–matter interaction within the QW system shows a complex interplay between detuning, spatial characteristics, and beam properties. In the resonant case, where the detuning
-
Third harmonic generation microscopy of magnetic domains in garnet films Laser Phys. Lett. (IF 1.7) Pub Date : 2024-01-08 Anton Maydykovskiy, Nikita S Popov, Tatiana Murzina
Nonlinear optical microscopy is a powerful non-destructive technique that allows to study a wide range of phenomena. Optical third harmonic generation (THG) is mostly known by its applications in investigation of biological structures, while magneto-optical effects in THG are not well recognized. Here we demonstrate high efficiency of the THG probe in studies of magnetic domain structure of epitaxial
-
Bimetallic solid solution MAX phase Ti2NbAlC2 as saturable absorber for passively Q-switched Er3+-doped fiber laser Laser Phys. Lett. (IF 1.7) Pub Date : 2024-01-04 Bin Zhao, Hong-Ping Zhang, Rong-Ze Ma, Gerald Farrell, Zhen-Rui Li, Peng-Fei Wang
In this paper, we demonstrated a stable Q-switched fiber laser operation with a central wavelength of 1531.43 nm using a bimetallic solid solution MAX phase Ti2NbAlC2 saturable absorber. The minimum pulse duration of 3.67 μs and the maximum repetition rate of 32.56 kHz were acquired at the pump power of 300 mW. Furthermore, the Q-switched pulse has a maximum output power of 1.08 mW and a maximum pulse
-
Propagation of electromagnetic pulses with nonzero area in dissipative media Laser Phys. Lett. (IF 1.7) Pub Date : 2023-12-28 A V Bogatskaya, E A Volkova, A M Popov
The propagation of ultrashort electromagnetic pulses with a nonzero electric area in dielectric and conducting media is studied in the frame of a unidirectional propagation model. General solutions for the electric pulse area are obtained for different types of media with a linear response to the external field. It is shown that the evolution of the electric area of the pulse is dramatically different
-
Detection of quantum steering for the generalized Werner states via artificial neural networks Laser Phys. Lett. (IF 1.7) Pub Date : 2023-12-27 Guo-Zhu Pan, Shu-Ting Zou, Ming Yang, Jian Zhou, Gang Zhang
Quantum steering is an important nonlocal resource and has a wide range of applications in quantum information processing. Although a lot of steering criteria have been proposed, it is still very difficult to efficiently detect quantum steering in experiment. Here we employ machine learning techniques to tackle the problem of quantum steering detection in two-qubit system. The quantum steering and
-
An optical encryption method based on double-threshold correspondence imaging Laser Phys. Lett. (IF 1.7) Pub Date : 2023-12-21 Mingze Sun, Xing Bai, Zhan Yu, Xinjia Li, Yang Liu, Yue Li, Jialin Zhang, Dan Zhao, Xin Zhou
An optical cryptosystem called double-threshold correspondence imaging (DTCI) encryption method is proposed. In DTCI encryption, two thresholds are used to select the larger and smaller bucket detector values, and the object image can be recovered only by averaging the speckle patterns corresponding to these selected bucket detector values. Compared with the traditional computational ghost imaging
-
Influence of photodynamic action on pure and mixed cultures of gram-negative bacteria: related to growth mechanisms Laser Phys. Lett. (IF 1.7) Pub Date : 2023-12-14 Rebeca V de Lima, Jennifer M Soares, Kate C Blanco, Vanderlei S Bagnato
Gram-negative bacteria present a significant challenge to conventional treatments due to their structurally complex cell walls, setting them apart from their gram-positive counterparts. These structural distinctions, coupled with various antimicrobial resistance mechanisms, make them highly resilient. Photodynamic inactivation (PDI) has emerged as a promising technique to address this challenge, capitalizing
-
Entropic property of randomized QAOA circuits Laser Phys. Lett. (IF 1.7) Pub Date : 2023-12-13 A Yu Chernyavskiy, B I Bantysh, Yu I Bogdanov
Quantum approximate optimization algorithm (QAOA) aims to solve discrete optimization problems by sampling bitstrings using a parameterized quantum circuit. The circuit parameters (angles) are optimized in the way that minimizes the cost Hamiltonian expectation value. Recently, general statistical properties of QAOA output probability distributions have begun to be studied. In contrast to the conventional
-
Dual-wavelength Nd:CALGO laser based on differential loss of birefringent filter Laser Phys. Lett. (IF 1.7) Pub Date : 2023-12-13 Reza Akbari, Pavel Loiko, Jun Xu, Xiaodong Xu, Arkady Major
Continuous-wave dual-wavelength (DW) operation of an a-cut Nd:CALGO (Nd:CaGdAlO4) laser around ∼1.08 μm was demonstrated using a single plate quartz birefringent filter (BRF) with an on-surface optical axis. A wide range of wavelength separations between the two laser lines ranging from sub-nm up to 10 nm was observed with controllable intensity ratios. A new regime of operation of DW laser was also
-
Fast reconstruction of programmable interferometers with intensity-only measurements Laser Phys. Lett. (IF 1.7) Pub Date : 2023-12-12 B I Bantysh, A Yu Chernyavskiy, S A Fldzhyan, Yu I Bogdanov
Programmable linear optical interferometers are promising for classical and quantum applications. Their integrated design makes it possible to create more scalable and stable devices. To use them in practice, one has to reconstruct the whole device model taking the manufacturing errors into account. The inability to address individual interferometer elements complicates the reconstruction problem.
-
Early diagnosis of citrus Huanglongbing by Raman spectroscopy and machine learning Laser Phys. Lett. (IF 1.7) Pub Date : 2023-12-07 Lili Kong, Tianyuan Liu, Honglin Qiu, Xinna Yu, Xianda Wang, Zhiwei Huang, Meizhen Huang
Timely diagnosis of citrus Huanglongbing (HLB) is fundamental to suppressing disease spread and reducing economic losses. This paper explores the combination of Raman spectroscopy and machine learning for on-site, accurate and early diagnosis of citrus HLB. The tissue lesion characteristics of citrus leaves at different stages of HLB infection was explored by Raman spectroscopy, and a scientific spectral
-
Quasi-classical motion of a particle in a bulk dissipative medium Laser Phys. Lett. (IF 1.7) Pub Date : 2023-12-01 S V Sazonov
A version of the quasi-classical approach is proposed, which makes it possible to describe the straight-line motion of a micro-particle in a bulk dissipative medium. From the side of the medium, the particle is acted upon by the force of viscous friction and the drag force, which are proportional to the velocity and the square of the velocity, respectively. In addition, an external conservative force
-
Correlated-photon-pair generation via SFWM in tapered optical fibers with femtosecond laser pump Laser Phys. Lett. (IF 1.7) Pub Date : 2023-11-29 A L Shmakova, I Z Latypov, A A Kalachev
Spontaneous four-wave mixing (SFWM) in optical micro-/nanofibers is studied theoretically and experimentally. Joint spectral intensity of the biphoton field generated via SFWM under excitation of femtosecond laser pulses is measured and calculated considering self-phase modulation of the pump pulses and SFWM throughout the tapered fibers. In comparison with the previous study (Shukhin et al 2020 Phys
-
Application of TDLAS for measuring absorption coefficients of H2S rotational absorption lines near the wavelength of 2 µm Laser Phys. Lett. (IF 1.7) Pub Date : 2023-11-17 S V Kireev, A A Kondrashov, B R Kusmankulov, S L Shnyrev, S V Suganeev, A I Sultangulova
This paper presents the experimental measurement of hydrogen sulfide absorption coefficients in the pressure range of 75–460 mbar of two rotational absorption lines of the vibrational band of H2S molecule at 021-000 transition using the tunable diode laser absorption spectroscopy technique. The obtained results are compared with the data of the HITRAN spectroscopic database.
-
Quantum interferometric power versus quantum correlations in a graphene layer system with a scattering process under thermal noise Laser Phys. Lett. (IF 1.7) Pub Date : 2023-11-15 Zakaria Bouafia, Mostafa Mansour
Cutting-edge quantum processing technology is currently exploring the remarkable electronic properties of graphene layers, such as their high mobility and thermal conductivity. Our research is dedicated to investigating the behavior of quantum resources within a graphene layer system with a scattering process, specifically focusing on quantum interferometric power (QIP) and quantum correlations, while
-
Solar side-pumped Nd-doped fiber laser based on a doughnut-shaped hollow reflector Laser Phys. Lett. (IF 1.7) Pub Date : 2023-11-15 Jing Zhu, Yan Liu, Lanling Lan, Yulong Tang, Yuanyuan Zhang, Xiuhua Ma
A high-power solar side-pumped Nd-doped fiber laser based on a doughnut-shaped hollow reflector (DHR) is proposed. The primary concentrator consists of twelve off-axis parabolic mirrors. The DHR coupled with an array of three-dimensional compound parabolic concentrators (3D-CPCs) functions as the secondary concentrator, inside which many cycles of Nd-doped fiber is coiled. After being reflected by
-
Symmetric bidirectional quantum teleportation via eight-qubit cluster state Laser Phys. Lett. (IF 1.7) Pub Date : 2023-11-14 Rui Dai, Haisheng Li
This paper proposes a symmetric bidirectional quantum teleportation protocol through an eight-qubit cluster state as a quantum channel to achieve GHZ state interchange between two parties. Alice and Bob must first perform two CNOT gate operations on the unknown GHZ state to be sent in our scheme. Next, they need to complete the Bell state measurements and the corresponding unitary operations to obtain
-
Separability and classification of multipartite quantum states Laser Phys. Lett. (IF 1.7) Pub Date : 2023-11-08 Pan-Wen Ma, Hui Zhao, Naihuan Jing
We study separability in arbitrary multipartite quantum systems based on principal base matrices. Necessary conditions are presented for different kinds of separable states. These conditions can give a complete classification of multipartite quantum states. While the usual Bloch representation of a density matrix uses three types of generators, the representation with principal base matrices has one
-
Extra long phosphorescence in organic materials at cryogenic temperatures investigation Laser Phys. Lett. (IF 1.7) Pub Date : 2023-11-07 D Yu Tsipenyuk, V P Slobodyanin, A V Voropinov, F K Chikin
In this paper, investigations of extra-long phosphorescence in organic materials and optical crystals at cryogenic temperatures are presented. This study continues the cycle of our previous works devoted to the physical mechanism understanding of the long-run phosphorescence excitation. We wish to create an advanced and efficient laser for the media based on the Shpolsky matrix analogue. Another goal
-
Quantum dots interacting with a non-classical field under Kerr-phase modulation as a resource for repeatable quantum algorithms Laser Phys. Lett. (IF 1.7) Pub Date : 2023-11-02 S N Balybin, O V Tikhonova
An analytical solution describing the dynamics of a hybrid system comprising an interacting quantum dot and a quantum electromagnetic field in the presence of Kerr nonlinearity is obtained. A completely new regime of interaction is found. It provides stable periodically repeating dynamics for the total bipartite system and for the quantum dot excitation, accompanied by full and pure revivals. This
-
Entanglement control in a laser driven single layer graphene system Laser Phys. Lett. (IF 1.7) Pub Date : 2023-11-01 E Ali, A F AbdulKareem, T Kh Hussein, H A Abbas, D N Al-Saidi, S M Hameed, F A Rasen, S Sh Shafik, Mutaz S Alhessam, A Alawadi, A Alsalamy, R Abbass
In this letter, we have proposed a new model for quantum control of atom photon entanglement in a single layer graphene via von Neumann reduced entropy of entanglement. We consider the effect of terahertz laser field intensity on the degree of entanglement (DEM) in the resonance and off-resonance condition of the applied fields. We also investigate the spatially dependent of the DEM when two applied
-
Shaping ellipsoidal laser pulses in the scheme with black analog masks for photoinjector applications Laser Phys. Lett. (IF 1.7) Pub Date : 2023-10-31 Ekaterina I Gacheva, Mikhail A Martyanov, Anatoly K Poteomkin, Igor V Kuzmin, Sergey Yu Mironov
Today the electron beam emittance minimization race seems to slack due to insufficiency of beam shaping techniques. To fill the gap we propose a method for shaping a sharp 3D ellipsoidal boundary of laser pulses used in a photoinjector. To avoid distortions in the profiled laser beam, only black analog masks are exploited as shaping elements. A highly promising experimental distribution with a 3D boundary
-
Measurement-device-independent quantum secure multiparty summation based on entanglement swapping Laser Phys. Lett. (IF 1.7) Pub Date : 2023-10-30 Xiao-Feng Sun, Ling Fan, Cong Cao, Wen-Sheng Yu
In this paper, we propose a measurement-device-independent (MDI) quantum secure multiparty summation protocol based on entanglement swapping. The protocol is capable of providing a secure modulo-2 summation method for n parties. Our protocol uses Bell states as the information vehicle and establishes encryption through entanglement swapping, and each party encodes the information orderly to complete
-
2D-smoothing of laser beam fluctuations in optical compressor Laser Phys. Lett. (IF 1.7) Pub Date : 2023-10-16 Efim Khazanov
We propose a modification of the four diffraction gratings Treacy compressor (TC)—a double-smoothing grating compressor (DSGC)—which enables smoothing of spatial fluctuations of a laser beam in two directions. Smoothing along the groves is due to oblique incidence on the gratings or tilted grooves. Smoothing in the direction normal to the grooves is achieved due to the use of nonidentical pairs of
-
Influence of Eu3+ ions on 1.5 µm luminescence of Er3+ in TeO2–ZnO–Bi2O3 glasses Laser Phys. Lett. (IF 1.7) Pub Date : 2023-10-10 A P Savikin, K E Sumachev, M V Krasnov, O A Zamyatin, A A Sibirkin
TeO2–ZnO–Bi2O3 glasses doped with Eu3+ and Er3+ ions were prepared and investigated for their physical, optical, and luminescent properties. The optical band gap is calculated for the indirect transition and is within the 3.04–3.10 eV range. The Urbach energy varies from 0.135 to 0.098 eV with the increase in Eu3+ compound content. Bi2Te2O8 and ZnTeO3 complex oxide phases are generated in the mixture
-
On the possibility of using quantum annealers to solve problems of computational materials science Laser Phys. Lett. (IF 1.7) Pub Date : 2023-10-09 Nikolay V Maletin, Vladimir V Dremov, Igor I Klebanov
A promising area of application of quantum computing is computational materials science. In addition to the actively discussed use of quantum computers as simulators for modeling quantum systems, the possibility of using quantum computing to solve the problems of determining the parameters of model multiparameter potentials of intermolecular interaction is of great interest. Especially attractive for
-
C + L band ultra-widely tunable SOA hybrid fiber laser based on acousto-optic add-drop filter induced by polarization conversion Laser Phys. Lett. (IF 1.7) Pub Date : 2023-10-05 Feng Qiu, Yongzhong Bai, Dingrong Qu, Yanling Zhang, Lei Han, Guangbin Shan
Scientific and industrial applications have put forward new requirements for the wavelength tuning range of continuous-wave lasers. Herein, the constructed filter based on the acoustically-induced polarization conversion in single-mode fiber (SMF) covers the wavelength from 1464.2–1640.8 nm, and the tuning range is about ∼176.6 nm. The lasing wavelength is managed by the acousto-optical interaction
-
Optimized clustering sample selection for spectral reflectance recovery Laser Phys. Lett. (IF 1.7) Pub Date : 2023-10-05 Guangyuan Wu, Shijun Niu, Yifan Xiong
The accuracy of spectral recovery depends heavily on the selection of an appropriate sample set, so the optimized sample selection by clustering strategy can improve the spectral recovery results. This paper presents a sample optimization method that combines hierarchical clustering and K-mean angle similar clustering to achieve this process. The proposed method employs the hierarchical clustering
-
Multi-channel chaotic signal generation using a weak resonant cavity Fabry–Perot laser diode subject to self-phase-modulated feedback Laser Phys. Lett. (IF 1.7) Pub Date : 2023-10-04 Zhengshan Yin, Fei Wang, Tao Deng, Dengwang Hu, Guangqiong Xia, Zhengmao Wu
We propose and experimentally demonstrate a wideband multi-channel chaotic source using a weak resonant cavity Fabry–Perot laser diode with self-phase modulated optical feedback. In this configuration, self-phase modulation is incorporated into the external optical feedback loop to enhance bandwidth of the generated multi-channel chaos and suppress time delay signature (TDS). The experimental results
-
Sub-picosecond laser surface modification of Ti–Ni alloy and its antibacterial activity Laser Phys. Lett. (IF 1.7) Pub Date : 2023-10-04 Irina N Saraeva, Alena A Nastulyavichus, Islam V Sozaev, Eteri R Tolordava, Andrey A Rudenko, Sergey I Kudryashov, Anastasiia Yu Tokmacheva-Kolobova, Sergey A Gonchukov
Surface modification of titanium nickelide (Ti–Ni) alloy improves its properties, forming a barrier oxidized/carbonized subsurface layer, which blocks the release of toxic nickel ions. We have modified Ti–Ni alloys by structuring the surface with sub-picosecond laser at different radiation parameters. The modified surface was characterized using scanning electron microscopy and layer-by-layer energy
-
Optoacoustic angiography for noninvasive monitoring of experimental tumor angiogenesis Laser Phys. Lett. (IF 1.7) Pub Date : 2023-10-04 Anna Glyavina, Ksenia Akhmedzhanova, Alexey Kurnikov, Dmitry Khochenkov, Yulia Khochenkova, Pavel Subochev, Anna Orlova
The paper demonstrates the results of a study of experimental SN-12C xenograft vascular network formation using optoacoustic microscopy. A sevenfold increase in vascularity during tumor growth from days 7 to 121 was shown. The possibility of monitoring the development of individual vessels inside the tumor node has been demonstrated. The data obtained are important for understanding the mechanisms