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Nonclassical state via superposition of two coherent states (π/2 out of phase) and related entangled states
Journal article   Peer reviewed

Nonclassical state via superposition of two coherent states (π/2 out of phase) and related entangled states

Ran Zeng, Muhammad Ashfaq Ahmad and Shutian Liu
Optics communications, Vol.271(1), pp.162-168
01/03/2007
DOI: https://doi.org/10.1016/j.optcom.2006.10.032

Abstract

Entanglement Nonclassical states Photon statistics Superposition of coherent states
Nonclassical features of the superposition of two coherent states which are π/2 out of phase are discussed, such as sub-Poissonian photon statistics and quadrature squeezing, as well as negativity of the Wigner function. Special nonclassicality is found in the special state where the relative phase of superposition has relationship with the average photon number. The analysis of the amount of entanglement is also presented for the related two-mode entangled coherent states.

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