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Bidirectional quantum teleportation in continuous variables 连续变量中的双向量子传送
IF 1.7 4区 物理与天体物理
Laser Physics Letters Pub Date : 2024-08-30 DOI: 10.1088/1612-202x/ad72df
E A Nesterova, S B Korolev
{"title":"Bidirectional quantum teleportation in continuous variables","authors":"E A Nesterova, S B Korolev","doi":"10.1088/1612-202x/ad72df","DOIUrl":"https://doi.org/10.1088/1612-202x/ad72df","url":null,"abstract":"We propose a bidirectional quantum teleportation (BQT) protocol in continuous variables. We use a cluster state in continuous variables as the main resource to realize this protocol. In the paper, we obtain a family of configurations of cluster states in continuous variables that can be used to realize the BQT protocol. From the whole family of configurations, we have chosen those that realize the protocol with the smallest possible error.","PeriodicalId":17940,"journal":{"name":"Laser Physics Letters","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142189164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Quantum coherence protection by utilizing hybrid noise 利用混合噪声保护量子相干性
IF 1.7 4区 物理与天体物理
Laser Physics Letters Pub Date : 2024-08-30 DOI: 10.1088/1612-202x/ad72d8
Jiahui Feng, Tengtao Guo, Yuxuan Zhou, Xinyu Zhao, Yan Xia
{"title":"Quantum coherence protection by utilizing hybrid noise","authors":"Jiahui Feng, Tengtao Guo, Yuxuan Zhou, Xinyu Zhao, Yan Xia","doi":"10.1088/1612-202x/ad72d8","DOIUrl":"https://doi.org/10.1088/1612-202x/ad72d8","url":null,"abstract":"Noise is often considered as the biggest enemy of maintaining quantum coherence. However, in this paper, we show a scheme to protect quantum coherence by introducing extra noise. To be specific, we study an atom coupled to a single mode cavity (Jaynes–Cummings model) with two noises. One is from the cavity leakage, the other is from the stochastic atom-cavity coupling. Based on the non-Markovian dynamical equation, we show the quantum coherence can be protected by introducing the noise in the atom-cavity coupling. We study four different types of noises and show their performance on the coherence protection. We also analytically reveal the mechanism of the quantum coherence protection, namely the high frequency noise can freeze the dynamics thus protect coherence. Last but not least, a mixture of different types of noises (hybrid noise) is studied. We show the mixture can lower the performance of the coherence protection scheme and provide an explanation. We hope the results presented here may attract more attention on protecting quantum coherence by utilizing noise.","PeriodicalId":17940,"journal":{"name":"Laser Physics Letters","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142189135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Thermal conductivity analysis of nanofluid through laser speckle method 通过激光斑点法分析纳米流体的导热性
IF 1.7 4区 物理与天体物理
Laser Physics Letters Pub Date : 2024-08-30 DOI: 10.1088/1612-202x/ad7251
Jayashree Sa, Amita Tripathy, Ganeswar Nath
{"title":"Thermal conductivity analysis of nanofluid through laser speckle method","authors":"Jayashree Sa, Amita Tripathy, Ganeswar Nath","doi":"10.1088/1612-202x/ad7251","DOIUrl":"https://doi.org/10.1088/1612-202x/ad7251","url":null,"abstract":"The significance of laser interaction in assessing the stability of colloidal CeO<sub>2</sub> nanoparticles (NPs) in water medium is highlighted in this study. Utilizing the laser speckle technique, a non-destructive optical method, the activities of NPs synthesized in continuous wave (CW) mode are examined. The size of the cerium oxide NPs is determined through Particle Size Analyzer technique. The fluctuation in intensity of laser speckle scattered from various particles reflects the configuration of NPs in the base fluid medium, offering valuable insights into their stability. Further confirmation of NP stability is obtained through UV–Visible absorption spectroscopy. The examination of CeO<sub>2</sub> NPs in deionized water is conducted with a CW mode He–Ne laser operating at 632 nm. This laser interaction approach proves to be instrumental in evaluating the thermal properties of the prepared samples, particularly the thermal conductivity, which shows enhancements at varying concentrations and temperatures. The findings demonstrate the potential of fabricating CeO<sub>2</sub>-water nanofluids with improved thermal conductivity through laser interaction in a liquid medium, thereby eliminating the need for hazardous chemicals and vacuum conditions. This suggests promising applications in medium-temperature scenarios.","PeriodicalId":17940,"journal":{"name":"Laser Physics Letters","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142189133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Thermal quantum correlations and disorder in a fermionic system described by the extended Fermi–Hubbard-like model 扩展费米-哈伯德类模型描述的费米系统中的热量子相关性和无序性
IF 1.7 4区 物理与天体物理
Laser Physics Letters Pub Date : 2024-08-23 DOI: 10.1088/1612-202x/ad6e6d
Mohamed Essakhi, Mostafa Mansour
{"title":"Thermal quantum correlations and disorder in a fermionic system described by the extended Fermi–Hubbard-like model","authors":"Mohamed Essakhi, Mostafa Mansour","doi":"10.1088/1612-202x/ad6e6d","DOIUrl":"https://doi.org/10.1088/1612-202x/ad6e6d","url":null,"abstract":"This research investigates thermal quantum correlations in a fermionic system modeled using an extended Fermi–Hubbard-like model. We examine the impacts of noisy temperature, local chemical potential, and nearest-neighbor interaction. The Fermi–Hubbard model provides a framework for understanding fermion interactions in a lattice and shows potential for simulating fermionic systems with superconducting circuits in quantum simulation. Using the Jordan–Wigner transformation, we convert the fermionic system into a qubit system, bridging quantum information and particle physics. Thermal entanglement is assessed using concurrence measurement, while thermal quantum correlations are measured through trace distance discord and local quantum uncertainty. Our findings indicate that increasing temperature causes disorder, negatively affecting quantum entanglement and correlations. However, by adjusting the nearest-neighbor interaction strength and local potential, we can mitigate thermal noise effects, enhancing correlations and entanglement. Selecting appropriate parameters can ensure the system’s potential for quantum technology development.","PeriodicalId":17940,"journal":{"name":"Laser Physics Letters","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142189165","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Phase-mediated single-photon scattering and nonreciprocal transmission in a coupled resonator waveguide with a three-level giant atom 带有三电平巨原子的耦合谐振器波导中的相位介导单光子散射和非互易传输
IF 1.7 4区 物理与天体物理
Laser Physics Letters Pub Date : 2024-08-21 DOI: 10.1088/1612-202x/ad6e64
Keke Chen, Zhonghua Zhu, Yuqing Zhang, Xiangyun Fu, Zhaohui Peng, Zhenyan Lu, Yifeng Chai, Zuzhou Xiong, Lei Tan
{"title":"Phase-mediated single-photon scattering and nonreciprocal transmission in a coupled resonator waveguide with a three-level giant atom","authors":"Keke Chen, Zhonghua Zhu, Yuqing Zhang, Xiangyun Fu, Zhaohui Peng, Zhenyan Lu, Yifeng Chai, Zuzhou Xiong, Lei Tan","doi":"10.1088/1612-202x/ad6e64","DOIUrl":"https://doi.org/10.1088/1612-202x/ad6e64","url":null,"abstract":"We theoretically investigate single-photon scattering and nonreciprocal transmission in a coupled resonator waveguide which is coupled to a driven three-level giant atom via two distant sites. In our system, the local coupling phases are introduced to induce intriguing interference effects. As a result, the phase difference can serve as a sensitive controller for the photon scattering. It is found that the photon scattering properties can be effectively tailored by the size of the giant atom, the driving field and the phase difference. Intriguingly, by carefully tuning the parameters such as the atomic dissipation and the phase difference, a perfect nonreciprocal single-photon transmission can be realized. Additionally, the photon frequency can be adjusted by modulating Rabi frequency of the driving field. These results have significant potential for the development of nonreciprocal optical devices using the giant-atom configuration.","PeriodicalId":17940,"journal":{"name":"Laser Physics Letters","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142189166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Estimation of the set of states obtained in particle number measurement schemes 估计粒子数测量方案中获得的状态集
IF 1.7 4区 物理与天体物理
Laser Physics Letters Pub Date : 2024-08-21 DOI: 10.1088/1612-202x/ad6e6f
S B Korolev, E N Bashmakova, T Yu Golubeva
{"title":"Estimation of the set of states obtained in particle number measurement schemes","authors":"S B Korolev, E N Bashmakova, T Yu Golubeva","doi":"10.1088/1612-202x/ad6e6f","DOIUrl":"https://doi.org/10.1088/1612-202x/ad6e6f","url":null,"abstract":"The paper investigated a set of non-Gaussian states generated by measuring the number of particles in one of the modes of a two-mode entangled Gaussian state. It was demonstrated that all generated states depend on two types of parameters: some parameters are responsible for Gaussian characteristics, while other parameters are responsible for non-Gaussian characteristics. Among all generated states, we identified those optimally generated in terms of the generation probability and the magnitude of non-Gaussianity.","PeriodicalId":17940,"journal":{"name":"Laser Physics Letters","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142189171","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Investigation on gain-managed nonlinearity in Mamyshev oscillators 关于马迈雪夫振荡器中增益管理非线性的研究
IF 1.7 4区 物理与天体物理
Laser Physics Letters Pub Date : 2024-08-21 DOI: 10.1088/1612-202x/ad6e66
Sihua Lu, Wei Guo, Baofu Zhang, Qiurun He, Zhongxing Jiao, Tianshu Lai
{"title":"Investigation on gain-managed nonlinearity in Mamyshev oscillators","authors":"Sihua Lu, Wei Guo, Baofu Zhang, Qiurun He, Zhongxing Jiao, Tianshu Lai","doi":"10.1088/1612-202x/ad6e66","DOIUrl":"https://doi.org/10.1088/1612-202x/ad6e66","url":null,"abstract":"Mamyshev oscillators and gain-managed nonlinear (GMN) amplifiers have the capability to generate high-power sub-50 fs pulses, but their close relationship has not been systematically investigated. In this paper, we numerically study the influence of gain-managed nonlinearity on the laser evolution and output characteristics of the Mamyshev oscillator. The impact of the gain fibre length, as well as the central wavelength and bandwidth of spectral filters on GMN evolution in the laser are investigated. The results indicate that optimizing these cavity parameters can lead to the GMN evolution, which can improve the output peak power by 1.5–4 times in Mamyshev oscillators.","PeriodicalId":17940,"journal":{"name":"Laser Physics Letters","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142189168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Optical manipulations without light forces: deep superlattice for trapping and rotation of impurity particles in a buffer gas 无光力光学操纵：用于在缓冲气体中捕获和旋转杂质颗粒的深层超晶格
IF 1.7 4区 物理与天体物理
Laser Physics Letters Pub Date : 2024-08-21 DOI: 10.1088/1612-202x/ad6e6e
I V Krasnov
{"title":"Optical manipulations without light forces: deep superlattice for trapping and rotation of impurity particles in a buffer gas","authors":"I V Krasnov","doi":"10.1088/1612-202x/ad6e6e","DOIUrl":"https://doi.org/10.1088/1612-202x/ad6e6e","url":null,"abstract":"We propose a scheme to obtain a deep optical superlattice (OSL) for resonant impurity particles in a buffer gas. In contrast to the well-known traditional methods of forming optical lattices (supelattices) that are based on the gradient force of radiation pressure, the presented scheme is based on the effect of a light induced drift (LID) in interfering light waves. The principle of its operation is based on the conception of so-called rectified forces induced by interfering bichromatic optical fields, which was developed earlier in the theory of resonant radiation-pressure forces. In the scheme under consideration, a deep OSL (with a period much larger than the optical wavelength) is formed due to the action of the effective rectified force on atomic particles which is proportional to the difference between the frequencies of transport collisions of excited and unexcited particles with buffer gas atoms.","PeriodicalId":17940,"journal":{"name":"Laser Physics Letters","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142189174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Terahertz field generation in a self-sustained magnetic laser-plasma channel 在自持磁激光等离子体通道中产生太赫兹场
IF 1.7 4区 物理与天体物理
Laser Physics Letters Pub Date : 2024-08-21 DOI: 10.1088/1612-202x/ad6e65
Mukesh Chand Gurjar, Devki Nandan Gupta
{"title":"Terahertz field generation in a self-sustained magnetic laser-plasma channel","authors":"Mukesh Chand Gurjar, Devki Nandan Gupta","doi":"10.1088/1612-202x/ad6e65","DOIUrl":"https://doi.org/10.1088/1612-202x/ad6e65","url":null,"abstract":"We theoretically investigate the terahertz field excitation from a laser-driven self-sustained magnetized plasma channel. The expulsion of plasma electrons by the laser ponderomotive force modifies the plasma density, which self-focuses the laser pulse. For the optimized laser parameters, the laser propagates without diverging in plasma and a plasma channel is created. The magnetic field applied along the laser propagation enhances the channel formation efficiency. We utilize this magnetic plasma channel to excite the transverse radiation field by the self-focused laser via wakefield excitation. The magnetic plasma channel maintains the laser intensity over a larger propagation distance, exciting wakefields efficiently. The second order perturbation technique is applied to calculate the wakefield components excited by the laser pulse in a self-sustained magnetic plasma channel. The density perturbation associated with the low-frequency ponderomotive force derives the transverse nonlinear current at terahertz frequency. Our results show that the magnetic field plasma channel can significantly enhance the terahertz conversion efficiency. The tunable terahertz radiation fields of 20 THz frequency with about 10 GV/m may be obtained using one Tesla magnetic field. The efficiency of the process may be optimized and controlled by the laser and plasma parameters. These high-field THz may be useful in various applications such as ultra-fast technology.","PeriodicalId":17940,"journal":{"name":"Laser Physics Letters","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142189167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Heralded high-efficiency entanglement concentration of cluster states for photon systems with linear optics via time-delay effect 通过时延效应预示线性光学光子系统簇态的高效纠缠集中
IF 1.7 4区 物理与天体物理
Laser Physics Letters Pub Date : 2024-08-21 DOI: 10.1088/1612-202x/ad6e6a
Fang-Fang Du, Ling-Hui Li, Xue-Mei Ren, Ming Ma, Yang-Yang Wang, Wen-Yao Liu
{"title":"Heralded high-efficiency entanglement concentration of cluster states for photon systems with linear optics via time-delay effect","authors":"Fang-Fang Du, Ling-Hui Li, Xue-Mei Ren, Ming Ma, Yang-Yang Wang, Wen-Yao Liu","doi":"10.1088/1612-202x/ad6e6a","DOIUrl":"https://doi.org/10.1088/1612-202x/ad6e6a","url":null,"abstract":"Entanglement concentration stands as a pivotal technique to safeguard against degraded fidelity in long-distance quantum communication. In this manuscript, propose ultra-efficient entanglement concentration protocols (ECPs) tailored for less-entangled two-photon cluster states and four-photon cluster states with two unknown parameters, leveraging simple linear optical elements and acute single-photon detectors. Additionally, ancillary photons, post-selection techniques, or photon-number-resolving detectors are unnecessary for complete identification of the parity-check measurement. By coordinating auxiliary time degrees of freedom and implementing multiple recycling conditions, the success of two ECPs can be heralded by detection signatures without compromising the incident qubits, thereby allowing their efficiencies to be close to 0.75, in principle. The combination of heralded detection and basic linear optical elements renders our practical ECPs accessible for experimental exploration with current technology.","PeriodicalId":17940,"journal":{"name":"Laser Physics Letters","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142189170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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