scholarly journals Optimal spin- and planar-quantum squeezing in superpositions of spin coherent states

2021 ◽  
Author(s):  
Richard Birrittella Jr. ◽  
Jason Ziskind ◽  
Edwin Hach ◽  
Paul Alsing ◽  
Christopher Gerry
Keyword(s):  
Coherent States ◽  
Spin Coherent States

Nonclassicality of photon-modulated spin coherent states in the Holstein-Primakoff realization

2021 ◽  
Author(s):  
Xiaoyan Zhang ◽  
Jisuo Wang ◽  
Lei Wang ◽  
Xiangguo Meng ◽  
Baolong Liang
Keyword(s):  
Coherent States ◽  
Wigner Distribution ◽  
Hermite Polynomials ◽  
Photon Number ◽  
Spin Ladder ◽  
Bernoulli Distribution ◽  
Ladder Operators ◽  
Spin Number ◽  
Photon Number Distribution ◽  
Spin Coherent States

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.

scholarly journals Spin squeezing and entanglement in superposition of nonlinear spin coherent states

2018 ◽  
Vol 2 (5) ◽  
pp. 055001
Author(s):  
Azita Naji ◽  
Mojtaba Jafarpour ◽  
Fatemeh Sammak
Keyword(s):  
Coherent States ◽  
Spin Squeezing ◽  
Spin Coherent States

Entanglement of bipartite partly non-orthogonal $\frac{1}{2}$-spin coherent states

Laser Physics ◽  
2020 ◽  
Vol 30 (8) ◽  
pp. 085201
Author(s):  
Mostafa Mansour ◽  
Zakaria Dahbi
Keyword(s):  
Coherent States ◽  
Spin Coherent States

Maximal violations of a Bell inequality by entangled spin-coherent states

2009 ◽  
Vol 79 (2) ◽  
Author(s):  
Christopher C. Gerry ◽  
Adil Benmoussa ◽  
Edwin E. Hach ◽  
Jaroslav Albert
Keyword(s):  
Coherent States ◽  
Bell Inequality ◽  
Spin Coherent States
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