中国物理B ›› 2020, Vol. 29 ›› Issue (12): 124213-.doi: 10.1088/1674-1056/abb3e8

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  • 收稿日期:2020-07-03 修回日期:1900-01-01 接受日期:2020-09-01 出版日期:2020-12-01 发布日期:2020-11-26

Nonclassicality of photon-modulated atomic coherent states in the Schwinger bosonic realization

Jisuo Wang(王继锁)1,†, Xiangguo Meng(孟祥国)2,‡, and Xiaoyan Zhang(张晓燕)1,2   

  1. 1 Shandong Provincial Key Laboratory of Laser Polarization and Information Technology, College of Physics and Engineering, Qufu Normal University, Qufu 273165, China; 2 Shandong Provincial Key Laboratory of Optical Communication Science and Technology, School of Physical Science and Information Engineering, Liaocheng University, Liaocheng 252059, China
  • Received:2020-07-03 Revised:1900-01-01 Accepted:2020-09-01 Online:2020-12-01 Published:2020-11-26
  • Contact: †Corresponding author. E-mail: jswang@qfnu.edu.cn ‡Corresponding author. E-mail: mengxiangguo1978@sina.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 11347026) and the Natural Science Foundation of Shandong Province, China (Grant Nos. ZR2016AM03 and ZR2017MA011).

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Abstract: We theoretically introduce two new photon-modulated atomic coherent states (ACSs) via using the Schwinger bosonic representation of the angular momentum operators (the sequential operations J n) on an ACS, and investigate their nonclassicality using the Wigner distribution, photon number distribution, and entanglement entropy. It is found that photon-modulated ACSs possess more stronger nonclassicality than the original ACS in certain regions of τ , the nonclassicality enhances with increasing number n of the operations J and the operation J+(-)n enhances the entanglement in the region of small (large) τ .

Key words: photon-modulated atomic coherent state, nonclassicality, Wigner distribution, entanglement

中图分类号:  (Quantum optics)

  • 42.50.-p
03.65.-w (Quantum mechanics) 05.30.-d (Quantum statistical mechanics)