Quantum routing of few photons using a nonlinear cavity coupled to two chiral waveguides
Jian-Shuang Liu(刘建双), Ya Yang(杨亚), Jing Lu(卢竞), and Lan Zhou(周兰)†
Affiliation Synergetic Innovation Center for Quantum Effects and Applications, Key Laboratory for Matter Microstructure and Function of Hunan Province, Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, School of Physics and Electronics, Hunan Normal University, Changsha 410081, China
Abstract We investigate few-photon scattering properties in two one-dimensional waveguides chirally coupled to a nonlinear cavity. The quantum states of scattered few photons are solved analytically via a real-space approach, and the solution indicates the few-photon reflection and transmission properties. When inputting two photons of equal energy to resonate with the cavity, the propagation characteristics of the two photons will be interesting, which is different from the previous anti-bunching effects with a quantum emitter. More importantly, when the total energy of the two incident photons equals the energy of a nonlinear cavity accommodating two photons, influence of the bound state will become larger to result in disappearance of antibunching effect. However, the bound state has no effect on probability of routing to another waveguide.
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11975095, 12075082, and 11935006) and the Science and Technology Innovation Program of Hunan Province, China (Grant No. 2020RC4047)
Corresponding Authors:
Lan Zhou
E-mail: zhoulan@hunnu.edu.cn
Cite this article:
Jian-Shuang Liu(刘建双), Ya Yang(杨亚), Jing Lu(卢竞), and Lan Zhou(周兰) Quantum routing of few photons using a nonlinear cavity coupled to two chiral waveguides 2022 Chin. Phys. B 31 110301
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