Generation of atomic spin squeezing via quantum coherence:Heisenberg–Langevin approach  

作　　者：Xuping Shao 邵旭萍(School of Science,Nantong University,Nantong 226019,China)

机构地区：[1]School of Science,Nantong University,Nantong 226019,China

出　　处：《Chinese Physics B》2020年第12期265-268,共4页中国物理B（英文版）

摘　　要：Taking into account the dephasing process in the realistic atomic ensemble,we theoretically study the generation of atomic spin squeezing via atomic coherence induced by the coupling and probe fields.Using the Heisenberg–Langevin approach,we find that the perfect spin squeezing in the X component can be obtained while the coupling and probe fields produce the maximum coherence between the ground state sublevels 1 and 2.Moreover,the degree of atomic spin squeezing in the X component can be strengthened with the increasing atomic density and/or Rabi frequency of the mixing field.The theoretical results provide a proof-of-principle demonstration of generating the atomic spin squeezing via quantum coherence in the realistic atomic ensemble which may find potential applications in quantum information processing and quantum networks.

关 键 词：atomic spin squeezing quantum coherence 

分 类 号：O562[理学—原子与分子物理] O413[理学—物理]