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Chin. Phys. B, 2021, Vol. 30(1): 010304    DOI: 10.1088/1674-1056/abc542
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Steady and optimal entropy squeezing for three types of moving three-level atoms coupled with a single-mode coherent field

Wen-Jin Huang(黄文进) and Mao-Fa Fang(方卯发)†
Abstract  The entropy squeezing properties of different types of moving three-level atoms coupled with a single-mode coherent field are studied. The influences of the moving velocity and initial states of the three-level atom on the entropy squeezing are discussed. The results show that, the entropy squeezing properties of the three-level atom depend on its initial state, moving velocity, and the type. A stationary three-level atom can not obtain a steady entropy squeezing whatever initial conditions are chosen, while a moving three-level atom can achieve a steady and optimal entropy squeezing through choosing higher velocity and appropriate initial state. Our result provides a simple method for preparing squeezing resources with ultra-low quantum noise of the three-level atomic system without additional any complex techniques.
Keywords:  entropy squeezing      moving three-level atom      single-mode coherent field  
Revised:  16 October 2020      Published:  23 December 2020
PACS:  03.67.-a (Quantum information)  
  42.50.-p (Quantum optics)  
  03.65.Yz (Decoherence; open systems; quantum statistical methods)  
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 12064012 and 11374096).
Corresponding Authors:  Corresponding author. E-mail: mffang@hunnu.edu.cn   

Cite this article: 

Wen-Jin Huang(黄文进) and Mao-Fa Fang(方卯发) Steady and optimal entropy squeezing for three types of moving three-level atoms coupled with a single-mode coherent field 2021 Chin. Phys. B 30 010304

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