等离子波导介导量子点腔耦合系统的纠缠

IF 1.1 3区物理与天体物理 Q4 PHYSICS, APPLIED

Journal of Low Temperature Physics Pub Date : 2023-07-21 DOI:10.1007/s10909-023-02982-2

Ju-Song Ryom, Gang-Yong Ri, Nam-Chol Kim, Myong-Chol Ko, Il-Hyang Choe, Su-Ryon Ri

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引用次数: 0

摘要

从理论上研究了由等离子波导和两个腔组成的复合量子系统中具有偶极子-偶极子相互作用的两个量子点之间的纠缠。通过用实空间形式确定激发概率幅值，得到了作为纠缠度度量的成对并发性的解析表达式。详细讨论了在失谐和耦合强度等物理参数控制下的纠缠特性。我们证明了DDI可以改善近距离的纠缠，并且在对称和非对称耦合的情况下都可以获得高纠缠态。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Entanglement Generated in Quantum Dot-Cavity Coupled System Mediated by Plasmonic Waveguide

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Entanglement Generated in Quantum Dot-Cavity Coupled System Mediated by Plasmonic Waveguide

We theoretically study the entanglement between two quantum dots (QDs) with dipole–dipole interaction (DDI) in the composite quantum system composed of a plasmonic waveguide and two cavities. The analytical expressions of the pairwise concurrence as a measure of entanglement are obtained by determining the excitation probability amplitudes with real space formalism. The properties of the entanglement are discussed in detail under the control of physical parameters such as detuning and coupling strengths. We demonstrate the DDI can improve the entanglement in short distance and highly entangled states can be obtained in the cases of symmetric and asymmetric coupling.

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来源期刊

Journal of Low Temperature Physics 物理-物理：凝聚态物理

CiteScore

3.30

自引率

25.00%

发文量

245

审稿时长

1 months

期刊介绍： The Journal of Low Temperature Physics publishes original papers and review articles on all areas of low temperature physics and cryogenics, including theoretical and experimental contributions. Subject areas include: Quantum solids, liquids and gases; Superfluidity; Superconductivity; Condensed matter physics; Experimental techniques; The Journal encourages the submission of Rapid Communications and Special Issues.