Physical Review A最新文献_第6页

One-dimensional Z2 lattice gauge theory in periodic Gauss-law sectors 周期性高斯定律扇形中的一维 Z2 格规理论

IF 2.9 2区物理与天体物理

Physical Review A Pub Date : 2024-09-16 DOI: 10.1103/physreva.110.033314

Vaibhav Sharma, Erich J. Mueller

引用次数: 0

Enhanced high-order harmonic generation by spatially-structured-light–induced topological-edge-state dynamics 空间结构光诱导拓扑边沿态动力学增强高阶谐波生成

IF 2.9 2区物理与天体物理

Physical Review A Pub Date : 2024-09-16 DOI: 10.1103/physreva.110.033111

Jianghua Luo, Jiajun Xiao, Zhongwei Wu, Yang Li, Xiaosong Zhu, Yueming Zhou

引用次数: 0

Local-field corrections of the Green's tensor in chiral media 手性介质中格林张量的局部场修正

IF 2.9 2区物理与天体物理

Physical Review A Pub Date : 2024-09-16 DOI: 10.1103/physreva.110.033109

Janine C. Franz, Stefan Yoshi Buhmann, A. Salam

引用次数: 0

Dimensional advantage in secure information trading via the noisy dense-coding protocol 通过噪声密集编码协议实现安全信息交易的维度优势

IF 2.9 2区物理与天体物理

Physical Review A Pub Date : 2024-09-16 DOI: 10.1103/physreva.110.032419

Ayan Patra, Rivu Gupta, Tamoghna Das, Aditi Sen(De)

{"title":"Dimensional advantage in secure information trading via the noisy dense-coding protocol","authors":"Ayan Patra, Rivu Gupta, Tamoghna Das, Aditi Sen(De)","doi":"10.1103/physreva.110.032419","DOIUrl":"https://doi.org/10.1103/physreva.110.032419","url":null,"abstract":"The quantum dense-coding (DC) protocol, which has no security feature, deals with the transmission of classical information encoded in a quantum state by using shared entanglement between a single sender and a single receiver. Its appropriate variant has been established as a quantum key distribution (QKD) scheme for shared two-qubit maximally entangled states, with the security proof utilizing the uncertainty relation of complementary observables and the Shor-Preskill entanglement purification scheme. We present the DC-based QKD protocol for higher-dimensional systems and report the lower bounds on the secret key rate, when the shared state is a two-qudit maximally entangled state, and mixtures of maximally entangled states with different ranks. The analysis also includes the impact of noisy channels on the secure key rates, before and after encoding. In both the noiseless and the noisy scenarios, we demonstrate that the key rate as well as the robustness of the protocol against noise increases with the dimension. Further, we prove that the set of useless states in the DC-based QKD protocol is convex and compact.","PeriodicalId":20146,"journal":{"name":"Physical Review A","volume":"18 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142262931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Microwave communication based on the cross-phase modulation in an inverted-Y-type Rydberg atomic system 基于倒 Y 型雷德贝格原子系统中交叉相位调制的微波通信

IF 2.9 2区物理与天体物理

Physical Review A Pub Date : 2024-09-16 DOI: 10.1103/physreva.110.033517

Y. C. Shi, C. J. Zhu, J. Y. Wu, J. Yang, Y. F. Zhang

引用次数: 0

Dense and sharp resonance peaks in stretched Moiré waveguides 拉伸莫伊里波导中密集而尖锐的共振峰

IF 2.9 2区物理与天体物理

Physical Review A Pub Date : 2024-09-16 DOI: 10.1103/physreva.110.033516

G. Alagappan, C. E. Png

{"title":"Dense and sharp resonance peaks in stretched Moiré waveguides","authors":"G. Alagappan, C. E. Png","doi":"10.1103/physreva.110.033516","DOIUrl":"https://doi.org/10.1103/physreva.110.033516","url":null,"abstract":"In this article, we demonstrate dense resonant peaks in the transmission spectra of a rectangular waveguide inscribed with a stretched moiré pattern. We investigated an array of silicon waveguides with sinusoidally modulated cladding of varying depth of modulation. The investigation reveals a critical depth of modulation that splits the geometries into weakly scattering and strongly scattering regimes. Geometries in the weakly scattering regime resemble Bragg waveguides with shallow cladding modulation, whereas in the strongly scattering regime, the geometries resemble chains of isolated dielectric particles. The guided mode photonic band gap for geometries in the strongly scattering regime is much larger than that of the weakly scattering regime. By inscribing stretched moiré patterns in the strongly scattering regime, we show that a large number of sharp peaks can be created in the transmission spectra of the waveguide. All periodic stretched moiré patterns can be identified with an R parameter. The R parameter indicates the ratio of the supercell period of the stretched system to the unstretched system. Our empirical study shows that the density of peaks linearly increases with R. The multiple resonance peaks evolve along well-defined trajectories with the quality factor defined by exponential functions of R.","PeriodicalId":20146,"journal":{"name":"Physical Review A","volume":"95 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142262932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Superfluid–Bose-glass transition in a system of disordered bosons with long-range hopping in one dimension 一维长程跳变无序玻色子系统中的超流体-玻色玻璃转变

IF 2.9 2区物理与天体物理

Physical Review A Pub Date : 2024-09-16 DOI: 10.1103/physreva.110.033315

Nicolas Dupuis

{"title":"Superfluid–Bose-glass transition in a system of disordered bosons with long-range hopping in one dimension","authors":"Nicolas Dupuis","doi":"10.1103/physreva.110.033315","DOIUrl":"https://doi.org/10.1103/physreva.110.033315","url":null,"abstract":"We study the superfluid–Bose-glass transition in a one-dimensional lattice boson model with power-law decaying hopping amplitude <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mrow><msub><mi>t</mi><mrow><mi>i</mi><mo>−</mo><mi>j</mi></mrow></msub><mo>∼</mo><mn>1</mn><mo>/</mo><msup><mrow><mo>|</mo><mi>i</mi><mo>−</mo><mi>j</mi><mo>|</mo></mrow><mi>α</mi></msup></mrow></math>, using bosonization and the nonperturbative functional renormalization group (FRG). When <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mi>α</mi></math> is smaller than a critical value <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mrow><msub><mi>α</mi><mi>c</mi></msub><mo><</mo><mn>3</mn></mrow></math>, the U(1) symmetry is spontaneously broken, which leads to a density mode with nonlinear dispersion and dynamical exponent <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mrow><mi>z</mi><mo>=</mo><mo>(</mo><mi>α</mi><mo>−</mo><mn>1</mn><mo>)</mo><mo>/</mo><mn>2</mn></mrow></math>; the superfluid phase is then stable for sufficiently weak disorder, contrary to the case of short-range hopping where disorder is a relevant perturbation when the Luttinger parameter is smaller than <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mrow><mn>3</mn><mo>/</mo><mn>2</mn></mrow></math>. In the presence of disorder, however, long-range hopping has no effect in the infrared limit and the FRG flow eventually becomes similar to that of a boson system with short-range hopping. This implies that the superfluid phase, when stable, exhibits a density mode with linear dispersion (<math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mrow><mi>z</mi><mo>=</mo><mn>1</mn></mrow></math>) and the superfluid–Bose-glass transition remains in the Berezinskii-Kosterlitz-Thouless universality class, while the Bose-glass fixed point is insensitive to long-range hopping. We compare our findings with a recent numerical study.","PeriodicalId":20146,"journal":{"name":"Physical Review A","volume":"95 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142262613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Four-qubit photonic system for publicly verifiable quantum random numbers and generation of public and private key 用于公开验证量子随机数以及生成公钥和私钥的四量子比特光子系统

IF 2.9 2区物理与天体物理

Physical Review A Pub Date : 2024-09-16 DOI: 10.1103/physreva.110.032615

Mayalakshmi Kolangatt, Anirudh Verma, Sujai Matta, Kanad Sengupta, C. M. Chandrashekar

{"title":"Four-qubit photonic system for publicly verifiable quantum random numbers and generation of public and private key","authors":"Mayalakshmi Kolangatt, Anirudh Verma, Sujai Matta, Kanad Sengupta, C. M. Chandrashekar","doi":"10.1103/physreva.110.032615","DOIUrl":"https://doi.org/10.1103/physreva.110.032615","url":null,"abstract":"We theoretically propose and experimentally demonstrate the use of a configurable four-qubit photonic system to generate publicly verifiable quantum random numbers, to perform entanglement verification, and to generate a secure public and private key. Quantum circuits, to generate the desired four-qubit states and its experimental realization in the photonic architecture, are carried out using photon pairs entangled in polarization and path degrees of freedom. By performing measurements on the four-qubit system and accessing partial information of the four-qubit state for public verification, we generate publicly verified and purely secured random bits at the rate of 185 kbps from collective data of 370 kbps. When the system is used for generating public and private keys, an equal number of public and private keys are generated simultaneously. We also record about 97.9% of sampled bits from four-qubit states passing entanglement verification and demonstrate the use of public and private key generated for image encryption-decryption. The theoretical model of noise on the four-qubit state and its effect on the generation rate of verified and secured bits are in perfect agreement with the experimental results. This demonstrates the practical use of the small-scale multiqubit photonic system for quantum-safe applications by providing the option for real-time verification of the security feature of the quantum system.","PeriodicalId":20146,"journal":{"name":"Physical Review A","volume":"24 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142262934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Anisotropy-induced Coulomb phase and quasiparticle zoo in the atomic monopole-spin hybrid system 原子单极-自旋混合系统中各向异性诱导的库仑相和准粒子动物园

IF 2.9 2区物理与天体物理

Physical Review A Pub Date : 2024-09-16 DOI: 10.1103/physreva.110.033316

Shao-Jun Li, Xiang Gao, Xue-Ting Fang, Lushuai Cao, Peter Schmelcher, Zhong-Kun Hu

{"title":"Anisotropy-induced Coulomb phase and quasiparticle zoo in the atomic monopole-spin hybrid system","authors":"Shao-Jun Li, Xiang Gao, Xue-Ting Fang, Lushuai Cao, Peter Schmelcher, Zhong-Kun Hu","doi":"10.1103/physreva.110.033316","DOIUrl":"https://doi.org/10.1103/physreva.110.033316","url":null,"abstract":"Quantum simulation of a monopole-spin hybrid system is performed on the basis of a dipolar ultracold gas in a ladder lattice. The site-occupation states of the dipolar ladder lattice gas can spontaneously emulate both the monopole and spin excitations. The hopping of the atoms induces a particle conversion process between spin and monopole pairs, and the dipole-dipole interaction determines the spin-spin, spin-monopole, and monopole-monopole interactions. The anisotropic nature of the dipole-dipole interaction allows hereby for a flexible engineering of the designed hybrid system, and for a significant tunability of the interaction strengths. As a result, we encounter a rich phase diagram, and specifically a self-assembled Coulomb phase arises, in which monopoles and spins coexist and are orderly arranged according to the local Gauss's law. The Coulomb phase hosts a zoo of different types of quasiparticles and provides the possibility to simulate various phenomena in particle physics, such as a degenerate vacuum, particle decay, and conversion processes. Our work provides a significant extension of the scope of quantum simulations based on the anisotropy of dipolar interactions.","PeriodicalId":20146,"journal":{"name":"Physical Review A","volume":"16 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142262616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Einstein-Podolsky-Rosen correlations in spontaneous parametric down-conversion: Beyond the Gaussian approximation 自发参量下变频中的爱因斯坦-波多尔斯基-罗森相关性：超越高斯近似

IF 2.9 2区物理与天体物理

Physical Review A Pub Date : 2024-09-16 DOI: 10.1103/physreva.110.033713

A. G. da Costa Moura, C. H. Monken

引用次数: 0