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Acta Physica Polonica A

Nonclassical Properties of Para-Bose Superposition States

Yang Yu, D.M. Wang

Published Mar 1, 2009• 0 citations
Publisher

Abstract

We investigate the nonclassical properties of para-Bose superposition states which involve the vacuum and one-or two-photon state of paraboson.It is found that these para-Bose superposition states exhibit stronger squeezing and antibunching.The amplitude-squared squeezing for these states is also examined.
DOI
10.12693/aphyspola.115.613

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We consider the quantum superposition of two coherent states shifted in phase by 3π/2, |α⟩ and |− i α⟩, as well as special states that are characterized solely with respect to amplitude α. According to analysis of nonclassical properties such as oscillatory and sub-Poissonian distribution of photon numbers, photon antibunching, quadrature squeezing, and negativity of Wigner function, it is concluded that the considered superposition state is a nonclassical state. Also, the special state is found to exhibit even stronger nonclassical features when relative phase ϕ of the superposition is equal to the average photon number |α| 2 .