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.

引用

页数：13

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