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Chin. Phys. B, 2018, Vol. 27(11): 114207    DOI: 10.1088/1674-1056/27/11/114207
ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS Prev   Next  

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

Yan-Yi Wang(王彦懿), Mao-Fa Fang(方卯发)
Synergetic Innovation Center for Quantum Effects and Application, and Key Laboratory of Low-Dimensional Quantum Structures andQuantum Control of Ministry of Education, School of Physics and Electronics, Hunan Normal University, Changsha 410081, China
Abstract  

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.

Keywords:  entropy squeezing      non-Hermitian dynamics      quantum optics      Jaynes-Cummings model  
Received:  03 June 2018      Revised:  20 August 2018      Accepted manuscript online: 
PACS:  42.50.-p (Quantum optics)  
  03.67.Lx (Quantum computation architectures and implementations)  
  03.67.-a (Quantum information)  
Fund: 

Project supported by the National Natural Science Foundation of China (Grant No. 11374096).

Corresponding Authors:  Mao-Fa Fang     E-mail:  mffang@hunnu.edu.cn

Cite this article: 

Yan-Yi Wang(王彦懿), Mao-Fa Fang(方卯发) Generation of sustained optimal entropy squeezing of a two-level atom via non-Hermitian operation 2018 Chin. Phys. B 27 114207

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