Mode-selective photon-added two-mode squeezed vacuum state and its entanglement properties

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-07-02 DOI:10.1088/1612-202x/ad59f9

Heng-Mei Li, Zhen Wang, Jian-Wen Cai, Hong-Chun Yuan and Xue-Xiang Xu

引用次数: 0

Abstract

A class of non-Gaussian entangled states is introduced by applying the nonlocal single-photon addition to two-mode squeezed vacuum state and the properties of entanglement are numerically investigated according to linear entropy and Einstein–Podolsky–Rosen (EPR) steering. After the nonlocal single-photon addition operation, Wigner function of the generated state appears some negative region and loses its Gaussian property in phase space. In essence, non-Gaussian entangled states are generated after applying nonlocal single-photon addition. Additionally, by studying the linear entropy and EPR steering, we find that single-photon addition can enhance their entanglement degree and non-Gaussian steering can be witnessed in a large range of squeezing parameter for the second-order quadratures, which may provide a well application in the fields of quantum information processing.

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模式选择性光子添加双模挤压真空态及其纠缠特性

通过对双模挤压真空态进行非局域单光子加法，引入了一类非高斯纠缠态，并根据线性熵和爱因斯坦-波多尔斯基-罗森（EPR）转向对纠缠的性质进行了数值研究。经过非局部单光子加法操作后，生成态的维格纳函数出现了一些负区域，并在相空间中失去了高斯特性。从本质上讲，非本地单光子相加后会产生非高斯纠缠态。此外，通过对线性熵和EPR转向的研究，我们发现单光子加法可以增强它们的纠缠度，并且在二阶四次方的较大挤压参数范围内可以看到非高斯转向，这可能会在量子信息处理领域提供很好的应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.