Physical Review a最新文献_第4页

Strong local passive state in the minimal quantum energy teleportation model 最小量子能量远距传输模型中的强局部被动态

IF 2.9 2区物理与天体物理

Physical Review a Pub Date : 2024-06-07 DOI: 10.1103/physreva.109.062208

Feng Wu, Hao Fan, Lu Wang, Shu-Qian Liu, Si-Yuan Liu, Wen-Li Yang

引用次数: 0

Hexapartite coherent feedback control in four-wave mixing with a spatially structured pump 带有空间结构泵的四波混合中的六方相干反馈控制

IF 2.9 2区物理与天体物理

Physical Review a Pub Date : 2024-06-07 DOI: 10.1103/physreva.109.062409

Haiyan He, Kai Zhang, Jietai Jing

引用次数: 0

Optimal control of linear Gaussian quantum systems via quantum learning control 通过量子学习控制实现线性高斯量子系统的最优控制

IF 2.9 2区物理与天体物理

Physical Review a Pub Date : 2024-06-06 DOI: 10.1103/PhysRevA.109.063508

Yu-Hong Liu, Yexiong Zeng, Qing-Shou Tan, Daoyi Dong, Franco Nori, Jie‐Qiao Liao

{"title":"Optimal control of linear Gaussian quantum systems via quantum learning control","authors":"Yu-Hong Liu, Yexiong Zeng, Qing-Shou Tan, Daoyi Dong, Franco Nori, Jie‐Qiao Liao","doi":"10.1103/PhysRevA.109.063508","DOIUrl":"https://doi.org/10.1103/PhysRevA.109.063508","url":null,"abstract":"Efficiently controlling linear Gaussian quantum (LGQ) systems is a significant task in both the study of fundamental quantum theory and the development of modern quantum technology. Here, we propose a general quantum-learning-control method for optimally controlling LGQ systems based on the gradient-descent algorithm. Our approach flexibly designs the loss function for diverse tasks by utilizing first- and second-order moments that completely describe the quantum state of LGQ systems. We demonstrate both deep optomechanical cooling and large optomechanical entanglement using this approach. Our approach enables the fast and deep ground-state cooling of a mechanical resonator within a short time, surpassing the limitations of sideband cooling in the continuous-wave driven strong-coupling regime. Furthermore, optomechanical entanglement could be generated remarkably fast and surpass several times the corresponding steady-state entanglement, even when the thermal phonon occupation reaches one hundred. This work will not only broaden the application of quantum learning control, but also open an avenue for optimal control of LGQ systems.","PeriodicalId":48702,"journal":{"name":"Physical Review a","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141380969","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

Propagation properties of the electron circular vortex beam based on the butterfly catastrophe 基于蝴蝶灾难的电子圆涡束传播特性

IF 2.9 2区物理与天体物理

Physical Review a Pub Date : 2024-05-24 DOI: 10.1103/physreva.109.053318

Hailong Wu, Zhengheng Li, Huilin Tang, Zhejue Fan, Xuezhen Cai, Zien Feng, Junxi Zhang, Zhenhang Xu, Zhang Ruan, Dongmei Deng

引用次数: 0

Electron-photon exchange-correlation approximation for quantum-electrodynamical density-functional theory 量子电动力学密度函数理论的电子光子交换相关近似值

IF 2.9 2区物理与天体物理

Physical Review a Pub Date : 2024-05-23 DOI: 10.1103/physreva.109.052823

I-Te Lu, M. Ruggenthaler, N. Tancogne-Dejean, S. Latini, M. Penz, Angel Rubio

{"title":"Electron-photon exchange-correlation approximation for quantum-electrodynamical density-functional theory","authors":"I-Te Lu, M. Ruggenthaler, N. Tancogne-Dejean, S. Latini, M. Penz, Angel Rubio","doi":"10.1103/physreva.109.052823","DOIUrl":"https://doi.org/10.1103/physreva.109.052823","url":null,"abstract":"Quantum-electrodynamical density-functional theory (QEDFT) provides a promising avenue for exploring complex light-matter interactions in optical cavities for real materials. Similar to conventional density-functional theory, the Kohn-Sham formulation of QEDFT needs approximations for the generally unknown exchange-correlation functional. In addition to the usual electron-electron exchange-correlation potential, an approximation for the electron-photon exchange-correlation potential is needed. A recent electron-photon exchange functional [C. Schäfer , ], derived from the equation of motion of the nonrelativistic Pauli-Fierz Hamiltonian, shows robust performance in one-dimensional systems across weak- and strong-coupling regimes. Yet, its performance in reproducing electron densities in higher dimensions remains unexplored. Here we consider this QEDFT functional approximation from one- to three-dimensional finite systems and across weak to strong light-matter couplings. The electron-photon exchange approximation provides excellent results in the ultrastrong-coupling regime. However, to ensure accuracy also in the weak-coupling regime across higher dimensions, we introduce a computationally efficient renormalization factor for the electron-photon exchange functional, which accounts for part of the electron-photon correlation contribution. These findings extend the applicability of photon-exchange-based functionals to realistic cavity-matter systems, fostering the field of cavity QED (quantum-electrodynamics) materials engineering.\u0000 \u0000 \u0000 \u0000 \u0000 Published by the American Physical Society\u0000 2024\u0000 \u0000 \u0000","PeriodicalId":48702,"journal":{"name":"Physical Review a","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2024-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141103645","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

Quantum tunneling decay due to interference of a bound and an antibound state 束缚态和反束缚态干涉导致的量子隧道衰变

IF 2.9 2区物理与天体物理

Physical Review a Pub Date : 2024-05-23 DOI: 10.1103/physreva.109.052225

G. García-Calderón, R. Romo

引用次数: 0

State-resolved mutual neutralization of O+16 with 状态解析的 O+16 与 <mml:math xmlns:mml="http://

IF 2.9 2区物理与天体物理

Physical Review a Pub Date : 2024-05-22 DOI: 10.1103/physreva.109.052820

A. Schmidt-May, P. Barklem, J. Grumer, A. Amarsi, M. Björkhage, Mikael Blom, Arnaud Dochain, MingChao Ji, Paul Martini, P. Reinhed, Stefan Rosén, A. Simonsson, Henning Zettergren, H. Cederquist, Henning T. Schmidt

{"title":"State-resolved mutual neutralization of \u0000<mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\"><mml:mmultiscripts><mml:mi mathvariant=\"normal\">O</mml:mi><mml:none/><mml:mo>+</mml:mo><mml:mprescripts/><mml:none/><mml:mn>16</mml:mn></mml:mmultiscripts></mml:math>\u0000 with \u0000<mml:math xmlns:mml=\"http://","authors":"A. Schmidt-May, P. Barklem, J. Grumer, A. Amarsi, M. Björkhage, Mikael Blom, Arnaud Dochain, MingChao Ji, Paul Martini, P. Reinhed, Stefan Rosén, A. Simonsson, Henning Zettergren, H. Cederquist, Henning T. Schmidt","doi":"10.1103/physreva.109.052820","DOIUrl":"https://doi.org/10.1103/physreva.109.052820","url":null,"abstract":"We measured the product-state distribution and its dependence on the hydrogen isotope for the mutual neutralization between O+16 and H−1,2 at the double electrostatic ion-beam storage ring DESIREE for center-of-mass collision energies below 100 meV. We find at least six product channels into ground-state hydrogen and oxygen in different excited states. The majority of oxygen products populate terms corresponding to 2s22p3(4S∘)4s with S∘5 as the main reaction product. We also observe product channels into terms corresponding to 2s22p3(4S)3p. Collisions with the heavier hydrogen isotope yield a branching into these lower excited states smaller than collisions with H−1. The observed reaction products agree with the theoretical predictions. The detailed branching fractions, however, differ between the theoretical results, and none of them fully agree with the experiment.\u0000 \u0000 \u0000 \u0000 \u0000 Published by the American Physical Society\u0000 2024\u0000 \u0000 \u0000","PeriodicalId":48702,"journal":{"name":"Physical Review a","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2024-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141110399","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

Investigation of H2 formation in electron-impact double ionization and fragmentation of tetrahydrofuran by multiparticle coincidence momentum imaging and ab initio calculations 通过多粒子重合动量成像和 ab initio 计算研究四氢呋喃电子撞击双电离和碎裂过程中 H2 的形成

IF 2.9 2区物理与天体物理

Physical Review a Pub Date : 2024-05-22 DOI: 10.1103/physreva.109.052821

Shaokui Jia, Jiaqi Zhou, Chenkai Zhang, Tao Yang, Jianzhi Xu, Xiaorui Xue, Xintai Hao, Qingrui Zeng, Xueguang Ren

引用次数: 0

Generic quartic solitons in optical media 光学介质中的通用四次孤子

IF 2.9 2区物理与天体物理

Physical Review a Pub Date : 2024-05-22 DOI: 10.1103/physreva.109.053528

E. Tsoy, Laziz A. Suyunov

引用次数: 0

Erratum: Quantum stochastic thermodynamics: A semiclassical theory in phase space [Phys. Rev. A 108, 062207 (2023)] 勘误：量子随机热力学：相空间中的半经典理论 [Phys. Rev. A 108, 062207 (2023)]

IF 2.9 2区物理与天体物理

Physical Review a Pub Date : 2024-05-22 DOI: 10.1103/physreva.109.059902

Zhaoyu Fei

引用次数: 0