arXiv - PHYS - Quantum Gases最新文献_第10页

The dynamics of Tonks-Girardeau gas excited by a pulse drive 脉冲驱动激发的唐克斯-吉拉尔多气体动力学

arXiv - PHYS - Quantum Gases Pub Date : 2024-06-26 DOI: arxiv-2406.17997

Jia Li, Yajiang Hao

引用次数: 0

arXiv - PHYS - Quantum Gases Pub Date : 2024-06-25 DOI: arxiv-2406.17868

V. I. Yukalov, E. P. Yukalova

引用次数: 0

Phase driven exact and unconventional superradiance phase transition in non-Hermitian cascaded Rabi cavities 非赫米提级联拉比空腔中的相位驱动精确和非常规超光度相变

arXiv - PHYS - Quantum Gases Pub Date : 2024-06-24 DOI: arxiv-2406.16576

Shujie Cheng, Shuai-Peng Wang, G. D. M. Neto, Gao Xianlong

{"title":"Phase driven exact and unconventional superradiance phase transition in non-Hermitian cascaded Rabi cavities","authors":"Shujie Cheng, Shuai-Peng Wang, G. D. M. Neto, Gao Xianlong","doi":"arxiv-2406.16576","DOIUrl":"https://doi.org/arxiv-2406.16576","url":null,"abstract":"This work reports the phase driven symmetry breaking and exact and\u0000unconventional superradiance phase transition in the non-Hermitian cascaded\u0000Rabi cavities. The non-Hermiticity is introduced in the coupling phase (denoted\u0000by $varphi$) between the atom and the optical field. The exactness refers to\u0000the fact that the superradiance phase boundary is obtained analytically and\u0000verified by the observables. The unconventionality is reflected in that when\u0000$|varphi|=frac{pi}{4}$ or $|varphi|=frac{3pi}{4}$, the phase boundary is\u0000uniquely determined by $mathcal{J}=frac{1}{2}$ (where $mathcal{J}$ is the\u0000dimensionless cavity coupling strength) and is independent of the atom-optical\u0000field coupling strength $g$. For other $varphi$, the phase boundary is\u0000determined by $mathcal{J}$ and the dimensionless atom-optical field coupling\u0000strength $g$ together. Besides, we find that there are phase driven first-order\u0000and second-order superradiance phase transitions, and the quantum criticality\u0000for the second-order superradiance phase transition is studied. In addition,\u0000the experimental feasibility is discussed. This work will stimulate the studies\u0000of non-Hermitian superradiance quantum phase transitions and their experimental\u0000realizations, as well as the underlying universality class of phase\u0000transitions.","PeriodicalId":501521,"journal":{"name":"arXiv - PHYS - Quantum Gases","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141548882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Photon-assisted tunneling resonantly controlling spin current of a spin-orbit-coupled atom in a toroidal trap 光子辅助隧道共振控制环形陷阱中自旋轨道耦合原子的自旋电流

arXiv - PHYS - Quantum Gases Pub Date : 2024-06-23 DOI: arxiv-2406.16002

Zhiqiang Li, Xiaoxiao Hu, Zhao-Yun Zeng, Ai-Xi Chen, Xiaobing Luo

{"title":"Photon-assisted tunneling resonantly controlling spin current of a spin-orbit-coupled atom in a toroidal trap","authors":"Zhiqiang Li, Xiaoxiao Hu, Zhao-Yun Zeng, Ai-Xi Chen, Xiaobing Luo","doi":"arxiv-2406.16002","DOIUrl":"https://doi.org/arxiv-2406.16002","url":null,"abstract":"The periodic flashing potential has proven to be a powerful tool for\u0000investigating directed atomic currents. By applying the flashing ring-shaped\u0000potential to spin-orbit (SO) coupled, noninteracting Bose-Einstein condensate\u0000(BEC) systems, through photon-assisted tunneling (resonance) techniques, we\u0000demonstrate the generation of tunable alternating (AC) spin and atomic mass\u0000currents that can be precisely controlled in terms of direction and strength.\u0000The underlying mechanism behind this phenomenon is that the flashing potential\u0000supplies enough photons to induce Rabi oscillations and provides momentum\u0000transfer for spin and atomic transport. As the single-particle ground state of\u0000the unperturbed SO-coupled BEC depends on the Raman coupling strength, we\u0000demonstrate how to generate and control AC spin currents in the cases where the\u0000initial state resides in a single-well or double-well phase. In particular, we\u0000realize and explain the mechanism of generating a net AC spin current without\u0000mass current through single-photon resonance processes. It is shown that these\u0000interesting resonance phenomena can be analytically described only by the\u0000simple three-level model, which creates the possibility of transparent controls\u0000of spin dynamics.","PeriodicalId":501521,"journal":{"name":"arXiv - PHYS - Quantum Gases","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141515202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optical Tweezer Arrays of Erbium Atoms 铒原子光镊阵列

arXiv - PHYS - Quantum Gases Pub Date : 2024-06-23 DOI: arxiv-2406.16146

D. S. Grün, S. J. M. White, A. Ortu, A. Di Carli, H. Edri, M. Lepers, M. J. Mark, F. Ferlaino

引用次数: 0

Observation of Continuous Time Crystal in a Spin Maser System 自旋激光系统中的连续时间晶体观测

arXiv - PHYS - Quantum Gases Pub Date : 2024-06-21 DOI: arxiv-2406.15017

Weiyu Wang, Mingjun Feng, Qianjin Ma, Zi Cai, Erwei Li, Guobin Liu

{"title":"Observation of Continuous Time Crystal in a Spin Maser System","authors":"Weiyu Wang, Mingjun Feng, Qianjin Ma, Zi Cai, Erwei Li, Guobin Liu","doi":"arxiv-2406.15017","DOIUrl":"https://doi.org/arxiv-2406.15017","url":null,"abstract":"Pair interaction potentials between atoms in a crystal are in general\u0000non-monotonic in distance, with a local minimum whose position gives the\u0000lattice constant of the crystal. A temporal analogue of this idea of crystal\u0000formation is still pending despite intensive studies on the time crystal phase.\u0000In a hybrid spin maser system with a time delay feedback, we report the\u0000observation of a continuous time crystal induced by a retarded interaction with\u0000a characteristic time scale. This nonequilibrium phase features a\u0000self-sustained oscillation with an emergent frequency other than the intrinsic\u0000Larmor precession frequency of the spin maser system. It is shown that the\u0000amplitude of the oscillation is robust against perturbation, while its time\u0000phase randomly distributes from 0 to $2pi$ for different realizations, a\u0000signature of spontaneous continuous time translation symmetry breaking. This\u0000CTC phase emerges only when the feedback strength exceeds a critical value, at\u0000which the system experiences a first order phase transition. Such a retarded\u0000interaction induced CTC is closer to the original idea of crystal, compared to\u0000mechanisms in other time crystal proposals.","PeriodicalId":501521,"journal":{"name":"arXiv - PHYS - Quantum Gases","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141515208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Excitonic Bose-polarons in electron-hole bilayers 电子-空穴双层膜中的激子玻色极子

arXiv - PHYS - Quantum Gases Pub Date : 2024-06-21 DOI: arxiv-2406.15660

E. A. Szwed, B. Vermilyea, D. J. Choksy, Zhiwen Zhou, M. M. Fogler, L. V. Butov, D. K. Efimkin, K. W. Baldwin, L. N. Pfeiffer

引用次数: 0

Synthetic spin-orbit coupling for the multi-spin models in optical lattices 光晶格中多自旋模型的合成自旋轨道耦合

arXiv - PHYS - Quantum Gases Pub Date : 2024-06-20 DOI: arxiv-2406.14042

Zhen Zheng, Yan-Qing Zhu, Shanchao Zhang, Shi-Liang Zhu, Z. D. Wang

引用次数: 0

Perspective: Interactions mediated by atoms, photons, electrons, and excitons 透视：以原子、光子、电子和激子为媒介的相互作用

arXiv - PHYS - Quantum Gases Pub Date : 2024-06-19 DOI: arxiv-2406.13795

Rosario Paredes, Georg Bruun, Arturo Camacho-Guardian

{"title":"Perspective: Interactions mediated by atoms, photons, electrons, and excitons","authors":"Rosario Paredes, Georg Bruun, Arturo Camacho-Guardian","doi":"arxiv-2406.13795","DOIUrl":"https://doi.org/arxiv-2406.13795","url":null,"abstract":"Interactions between quasiparticles mediated by a surrounding environment are\u0000ubiquitous and lead to a range of important effects from collective modes of\u0000low temperature quantum gases, superconductivity, to the interaction between\u0000elementary particles at high energies. This perspective article is motivated by\u0000experimental progress in the fields of quantum degenerate atomic gases, cavity\u0000QED, and two-dimensional (2D) semi-conductors, which enable a systematic\u0000exploration of mediated interactions in new settings and regimes. We first\u0000describe how to microscopically calculate the quasiparticle interaction using\u0000perturbation theory, diagrammatics, and the path integral, highlighting the key\u0000role played by the quantum statistics of the quasiparticles. Recent theoretical\u0000and experimental insights into quasiparticle and mediated interactions in\u0000general obtained from atomic gases are then discussed, after which we focus on\u0000hybrid light-atom systems where a remarkable long range photon mediated\u0000interaction can be realised. Next, we describe new and puzzling results\u0000regarding the interaction between quasiparticles in 2D semiconductors. We then\u0000discuss how mediated interactions open up ways to realise new quantum phases in\u0000atomic and hybrid atom-photon systems as well as 2D semiconductors, and the\u0000perspective ends by posing some open questions and outlook.","PeriodicalId":501521,"journal":{"name":"arXiv - PHYS - Quantum Gases","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141515205","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bose-Einstein condensation of polaritons at room temperature in a GaAs/AlGaAs structure 室温下 GaAs/AlGaAs 结构中极化子的玻色-爱因斯坦凝聚

arXiv - PHYS - Quantum Gases Pub Date : 2024-06-19 DOI: arxiv-2406.13689

Hassan Alnatah, Qi Yao, Qiaochu Wan, Jonathan Beaumariage, Ken West, Kirk Baldwin, Loren N. Pfeiffer, David W. Snoke

引用次数: 0