On the dynamics of two photons interacting with a two-qubit coherent feedback network

被引：9
|
作者：
Zhang, Guofeng [1 ]
Pan, Yu [2 ]
机构：
[1] Hong Kong Polytech Univ, Dept Appl Math, Hung Hom, Kowloon, Hong Kong, Peoples R China
[2] Zhejiang Univ, Inst Cyber Syst & Control, Hangzhou 310027, Peoples R China
来源：
AUTOMATICA | 2020年 / 117卷
基金：
中国国家自然科学基金;
关键词：
Coherent feedback network; Two-level systems; Continuous-mode photon states; QUANTUM-SYSTEMS; INPUT; OUTPUT;
D O I：
10.1016/j.automatica.2020.108978
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
The purpose of this paper is to study the dynamics of a quantum coherent feedback network composed of two two-level systems (qubits) driven by two counter-propagating photons, one in each input channel. The coherent feedback network enhances the nonlinear photon-photon interaction inside the feedback loop. By means of quantum stochastic calculus and the input-output framework, the analytic form of the steady-state output two-photon state is derived. Based on the analytic form, the applications on the Hong-Ou-Mandel (HOM) interferometer and marginally stable single-photon devices using this coherent feedback structure have been demonstrated. (C) 2020 Elsevier Ltd. All rights reserved.
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页数：13
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