模式选择性光子添加双模挤压真空态及其纠缠特性

IF 1.4 4区物理与天体物理 Q3 OPTICS

Laser Physics Letters 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

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引用次数: 0

摘要

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。

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

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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来源期刊

Laser Physics Letters 物理-仪器仪表

CiteScore

3.30

自引率

11.80%

发文量

174

审稿时长

2.4 months

期刊介绍： Laser Physics Letters encompasses all aspects of laser physics sciences including, inter alia, spectroscopy, quantum electronics, quantum optics, quantum electrodynamics, nonlinear optics, atom optics, quantum computation, quantum information processing and storage, fiber optics and their applications in chemistry, biology, engineering and medicine. The full list of subject areas covered is as follows: -physics of lasers- fibre optics and fibre lasers- quantum optics and quantum information science- ultrafast optics and strong-field physics- nonlinear optics- physics of cold trapped atoms- laser methods in chemistry, biology, medicine and ecology- laser spectroscopy- novel laser materials and lasers- optics of nanomaterials- interaction of laser radiation with matter- laser interaction with solids- photonics