Improving entanglement and inhabiting depolarization of two-mode entangled coherent-squeezed states

IF 1.6 4区 物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY Indian Journal of Physics Pub Date : 2023-09-02 DOI:10.1007/s12648-023-02889-4
A. Dehghani
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Abstract

Here we apply a two-mode Binomial-like superposition of the photon-number operators (GSP operation) on each mode of the entangled coherent-squeezed states (ECSS), which are called GSP-ECSS from here on. In order to gain more insight into the effectiveness of this operation, and for comparison with the case already discussed as the photon-added ECSS, we present a general analysis of non-classical properties such as the photon statistics, degree of polarization, and the entanglement of the GSP-ECSS. We show that a particular choice of the parameters of the GSP operation enables us to prevent these states from depolarization as well as disentanglement. In other words, the GSP operation can be considered a reliable approach in the framework of quantum information theory which leads to the improvement of the non-classicality of the quantum states, especially their entanglement.

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改善双模纠缠相干挤压态的纠缠和栖息去极化现象
在这里,我们在纠缠相干态(ECSS)的每个模式上应用光子数算子的双模二项式类叠加(GSP 运算),这些纠缠相干态从此被称为 GSP-ECSS。为了更深入地了解这种操作的有效性,并与已经讨论过的光子添加相干态(ECSS)进行比较,我们对 GSP-ECSS 的光子统计、极化程度和纠缠等非经典特性进行了总体分析。我们的研究表明,对 GSP 操作参数的特定选择能够防止这些态的去极化和解纠缠。换句话说,GSP 运算可被视为量子信息论框架中的一种可靠方法,它能改善量子态的非经典性,尤其是它们的纠缠性。
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来源期刊
Indian Journal of Physics
Indian Journal of Physics 物理-物理:综合
CiteScore
3.40
自引率
10.00%
发文量
275
审稿时长
3-8 weeks
期刊介绍: Indian Journal of Physics is a monthly research journal in English published by the Indian Association for the Cultivation of Sciences in collaboration with the Indian Physical Society. The journal publishes refereed papers covering current research in Physics in the following category: Astrophysics, Atmospheric and Space physics; Atomic & Molecular Physics; Biophysics; Condensed Matter & Materials Physics; General & Interdisciplinary Physics; Nonlinear dynamics & Complex Systems; Nuclear Physics; Optics and Spectroscopy; Particle Physics; Plasma Physics; Relativity & Cosmology; Statistical Physics.
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