Generation of sustained optimal entropy squeezing of a two-level atom via non-Hermitian operation

Generation of sustained optimal entropy squeezing of a two-level atom via non-Hermitian operation

Yan-Yi Wang;Mao-Fa Fang

【期刊名称】《中国物理：英文版》 【年(卷),期】2018(027)011

【摘要】We investigate the entropy squeezing of a two-level atom in the Jaynes-Cummings model,and provide a scheme to generate the sustained optimal entropy squeezing of the atom via non-Hermitian operation.Our results show that the squeezing degree and the persistence time of entropy squeezing of atomic polarization components greatly depend on the non-Hermiticity intensity in non-Hermitian operation.Especially,under a proper choice of non-Hermiticity parameters,the sustained optimal entropy squeezing of the atom can be generated even though the atom is initially prepared in a no entropy squeezing state.

【总页数】6页(506-511) 【关键词】

【作者】Yan-Yi Wang;Mao-Fa Fang

【作者单位】Synergetic Innovation Center for Quantum Effects and Application, and Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, School of Physics and Electronics, Hunan Normal University, Changsha 410081,