Nonclassicality of photon-modulated spin coherent states in the Holstein—Primakoff realization
Xiaoyan Zhang(张晓燕)1, Jisuo Wang(王继锁)1,†, Lei Wang(王磊)1,3, Xiangguo Meng(孟祥国)2,‡, and Baolong Liang(梁宝龙)2
1 Shandong Provincial Key Laboratory of Laser Polarization and Information Technology, School of Physics and Physical 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; 3 School of Physics and Electronic Engineering, Heze University, Heze 274015, China
Abstract Two new photon-modulated spin coherent states (SCSs) are introduced by operating the spin ladder operators J± on the ordinary SCS in the Holstein-Primakoff realization and the nonclassicality is exhibited via their photon number distribution, second-order correlation function, photocount distribution and negativity of Wigner distribution. Analytical results show that the photocount distribution is a Bernoulli distribution and the Wigner functions are only associated with two-variable Hermite polynomials. Compared with the ordinary SCS, the photon-modulated SCSs exhibit more stronger nonclassicality in certain regions of the photon modulated number k and spin number j, which means that the nonclassicality can be enhanced by selecting suitable parameters.
Fund: This work was supported by the National Natural Science Foundation of China (Grant No.11347026) and the Natural Science Foundation of Shandong Province,China (Grant Nos.ZR2020MA085 and ZR2020MF113).
Xiaoyan Zhang(张晓燕), Jisuo Wang(王继锁), Lei Wang(王磊),Xiangguo Meng(孟祥国), and Baolong Liang(梁宝龙) Nonclassicality of photon-modulated spin coherent states in the Holstein—Primakoff realization 2022 Chin. Phys. B 31 054205
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