Higher-order nonclassical properties of nonlinear charge pair cat states

The concept of nonlinear charge pair cat states is introduced and their higher-order nonclassical properties are studied. By comparing the nonlinear cases of photon-added states f2(n) and a laser-driven trapped ion f3(n) with the linear case f1(n), it is shown that these states exhibit two-mode high...

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Bibliographic Details
Published in:Journal of physics. B, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2020-01, Vol.53 (2), p.25402
Main Authors: Duc, Truong Minh, Dinh, Dang Huu, Dat, Tran Quang
Format: Article
Language:English
Subjects:
entanglement
higher-order antibunching
higher-order squeezing
nonclassical states
nonlinear coherent states
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Summary:The concept of nonlinear charge pair cat states is introduced and their higher-order nonclassical properties are studied. By comparing the nonlinear cases of photon-added states f2(n) and a laser-driven trapped ion f3(n) with the linear case f1(n), it is shown that these states exhibit two-mode higher-order antibunching to all orders and the degree of antibunching depends on the suitable variables, especially on the nonlinear functions. We also show that in such states, the higher-order squeezing appears only in the even orders and the squeezing behaviours for the nonlinear cases f2(n) and f3(n) are quite opposite. These states are two-mode genuinely entangled regardless of the nonlinear functions and their entanglement properties are more obvious in the photon-added states f2(n) case.
ISSN:0953-4075
1361-6455
DOI:10.1088/1361-6455/ab51f7