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

被引：4
作者：
Wang, Jisuo [1 ]
Meng, Xiangguo [2 ]
Zhang, Xiaoyan [1 ,2 ]
机构：
[1] Qufu Normal Univ, Coll Phys & Engn, Shandong Prov Key Lab Laser Polarizat & Informat, Qufu 273165, Shandong, Peoples R China
[2] Liaocheng Univ, Sch Phys Sci & Informat Engn, Shandong Prov Key Lab Opt Commun Sci & Technol, Liaocheng 252059, Shandong, Peoples R China
来源：
CHINESE PHYSICS B | 2020年 / 29卷 / 12期
基金：
中国国家自然科学基金;
关键词：
photon-modulated atomic coherent state; nonclassicality; Wigner distribution; entanglement; ENTANGLED-STATE; WIGNER FUNCTION; DECOHERENCE;
D O I：
10.1088/1674-1056/abb3e8
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
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 tau, 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) tau.
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页数：6
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