Quantum properties of a superposition of squeezed displaced two-mode vacuum and single-photon states

Details Quantum properties of a superposition of squeezed displaced two-mode vacuum and single-photon states Quantum properties of a superposition of squeezed displaced two-mode vacuum and single-photon states

2008-08-20

arxiv.org/abs/0808.2681v2

Phys. Scr. 79 (2009) 035402 (13pp)

Physics

Quantum Physics

25pages, 7 figures

Scientific paper

10.1088/0031-8949/79/03/035402

In this paper, we study some quantum properties of a superposition of displaced squeezed two-mode vacuum and single-photon states, such as the second-order correlation function, the Cauchy-Schwartz inequality, quadrature squeezing, quasiprobability distribution functions and purity. This type of states includes two mechanisms, namely, interference in phase space and entanglement. We show that these states can exhibit sub-Piossonian statistics, squeezing and deviate from the classical Cauchy-Schwartz inequality. Moreover, the amount of entanglement in the system can be increased by increasing the squeezing mechanism. In the framework of the quasiprobability distribution functions we show that the single-mode state can tend to thermal state based on the correlation mechanism. Generation scheme for such states is given.

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