摘要
Dissipation is often considered as a detrimental effect in quantum systems for unitary quantum operations.However,it has been shown that suitable dissipation can be useful resources in both quantum information and quantum simulation.Here,we propose and experimentally simulate a dissipative phase transition(DPT)model using a single trapped ion with an engineered reservoir.We show that the ion’s spatial oscillation mode reaches a steady state after the alternating application of unitary evolution under a quantum Rabi model Hamiltonian and sideband cooling of the oscillator.The average phonon number of the oscillation mode is used as the order parameter to provide evidence for the DPT.Our work highlights the suitability of trapped ions for simulating open quantum systems and shall facilitate further investigations of DPT with various dissipation terms.
作者
蔡明磊
刘子都
姜越
吴宇恺
梅全鑫
赵文定
何丽
张翔
周子超
段路明
M.-L.Cai;Z.-D.Liu;Y.Jiang;Y.-K.Wu;Q.-X.Mei;W.-D.Zhao;L.He;X.Zhang;Z.-C.Zhou;L.-M.Duan(Center for Quantum Information,Institute for Interdisciplinary Information Sciences,Tsinghua University,Beijing 100084,China;Department of Physics,Renmin University,Beijing 100084,China;Beijing Academy of Quantum Information Sciences,Beijing 100193,China)
基金
supported by the Beijing Academy of Quantum Information Sciences
the National Key Research and Development Program of China(Grant No.2016YFA0301902)
Frontier Science Center for Quantum Information of the Ministry of Education of China
Tsinghua University Initiative Scientific Research Program
support from Shuimu Tsinghua Scholar Program and International Postdoctoral Exchange Fellowship Program(Talent-Introduction Program)。