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Measurement of S-Wave Scattering Length between 6Li and 88Sr Atoms Using Interspecies Thermalization in an Optical Dipole Trap

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Chinese Physics Letters 2019年第7期36卷 27-30页

作者： Xiao-Bin Ma Zhu-Xiong Ye Li-Yang Xie Zhen Guo Li You Meng Khoon Tey State Key Laboratory of Low-Dimensional Quantum Physics Department of Physics Tsinghua University Beijing 100084 Collaborative Innovation Center of Quantum Matter Beijing 100084

We report the creation of the first mixture of ^6Li and ^88Sr atoms in an optical dipole trap. Using this mixture,a measurement of the interspecies thermalization process is carried out and the previously unknown interspecies s-wave scattering length between ^6Li and ^88Sr atoms is extracted to be |a6 Li-88 Sr|=(380-100^+160)a0 with a0 being the Bohr radius from the rate of interspecies thermalization.

关键词： We report the creation optical dipole trap

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Response functions of hot and dense matter in the Nambu-Jona-Lasino model

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Chinese Physics C 2019年第9期43卷 62-82页

作者： Chengfu Mu Ziyue Wang Lianyi He School of Science Huzhou UniversityZhejiang 313000China Department of Physics Tsinghua UniversityBeijing 100084China State Key Laboratory of Low-Dimensional Quantum Physics Tsinghua UniversityBeijing 100084China Collaborative Innovation Center of Quantum Matter Beijing 100084China

We investigate current-current correlation functions,or the so-called response functions of a two-flavor Nambu-Jona-Lasino model at finite temperature and *** linear response is investigated introducing the conjugated gauge fields as external sources within the functional path integral *** response functions can be obtained by expanding the generational functional in powers of the external *** derive the response functions parallel to two well-established approximations for equilibrium thermodynamics,namely mean-field theory and a beyond-mean-field theory,taking into account mesonic *** functions based on the mean-field theory recover the so-called quasiparticle random phase *** calculate the dynamical structure factors for the density responses in various channels within the random phase approximation,showing that the dynamical structure factors in the baryon axial vector and isospin axial vector channels can be used to reveal the quark mass gap and the Mott dissociation of mesons,*** that the mesonic contributions are not taken into account in the random phase approximation,we also derive the response functions parallel to the beyond-mean-field *** show that the mesonic fluctuations naturally give rise to three kinds of famous diagrammatic contributions:the Aslamazov-Lakin contribution,the self-energy or density-of-state contribution,and the Maki-Thompson *** the equilibrium case,in evaluating the fluctuation contributions,we need to carefully treat the linear terms in external sources and the induced *** the chiral symmetry breaking phase,we find an additional chiral order parameter induced contribution,which ensures that the temporal component of the response functions in the static and long-wavelength limit recovers the correct charge susceptibility defined using the equilibrium thermodynamic *** contributions from mesonic fluctuations are exp

关键词： Nambu-Jona-Lasino model chiral phase transition linear response current-current correlation function

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A concise review of Rydberg atom based quantum computation and quantum simulation

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Chinese Physics B 2021年第2期30卷 1-22页

作者： Xiaoling Wu Xinhui Liang Yaoqi Tian Fan Yang Cheng Chen Yong-Chun Liu Meng Khoon Te Li You State Key Laboratory of Low Dimensional Quantum Physics Department of PhysicsTsinghua UniversityBeijing 100084China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China CAS Key Laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China Frontier Science Center for Quantum Information Beijing 100084China Beijing Academy of Quantum Information Sciences Beijing 100193China

Quantum information processing based on Rydberg atoms emerged as a promising direction two decades *** experimental and theoretical progresses have shined exciting light on this *** this concise review,we will briefly introduce the basics of Rydberg atoms and their recent applications in associated areas of neutral atom quantum computation and *** shall also include related discussions on quantum optics with Rydberg atomic ensembles,which are increasingly used to explore quantum computation and quantum simulation with photons.

关键词： quantum computation quantum simulation Rydberg atom quantum nonlinear optics

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