Nonreciprocal Single Photon Frequency Conversion via Chiral Coupling between a V-Type System and a Pair of Waveguides  

作　　者：Ce Shi Mu-Tian Cheng Xiao-San Ma Dong Wang Xianshan Huang Bing Wang Jia-Yan Zhang 史策;程木田;马小三;王东;黄仙山;王兵;章家岩(School of Electrical Engineering and Information, Anhui University of Technology;Anhui Provincial Key Lab of Power Electronics & Motion Control, Anhui University of Technology;School of Mathematics and Physics, Anhui University of Technology)

机构地区：[1]School of Electrical Engineering and Information,Anhui University of Technology,Maanshan 243002 [2]School of Mathematics and Physics,Anhui University of Technology,Maanshan 243002 [3]Anhui Provincial Key Lab of Power Electronics ＆ Motion Control,Anhui University of Technology,Maanshan 243002

出　　处：《Chinese Physics Letters》2018年第5期34-38,共5页中国物理快报（英文版）

基　　金：Supported by the Anhui Provincial Natural Science Foundation under Grant No 1608085MA09;the National Natural Science Foundation of China under Grant Nos 11774262,61675006,11474003 and 61472282

摘　　要：The single photon frequency conversion is investigated theoretically in the system composed of a V-type system chiral coupling to a pair of waveguides. The single photon scattering amplitudes are obtained using the real-space Hamiltonian. The calculated results show that the probability of single photon frequency down-or up-conversion can reach a unit by choosing appropriate parameters in the non-dissipative system with perfect chiral coupling.We present a nonreciprocal single photon beam splitter whose frequency of the output photon is different from that of the input photon. The influences of dissipations and non-perfect chiral coupling on the single frequency conversion are also shown. Our results may be useful in designing quantum devices at the single-photon level.The single photon frequency conversion is investigated theoretically in the system composed of a V-type system chiral coupling to a pair of waveguides. The single photon scattering amplitudes are obtained using the real-space Hamiltonian. The calculated results show that the probability of single photon frequency down-or up-conversion can reach a unit by choosing appropriate parameters in the non-dissipative system with perfect chiral coupling.We present a nonreciprocal single photon beam splitter whose frequency of the output photon is different from that of the input photon. The influences of dissipations and non-perfect chiral coupling on the single frequency conversion are also shown. Our results may be useful in designing quantum devices at the single-photon level.

关 键 词：Nonreciprocal Single Photon Frequency Conversion via Chiral Coupling between a V-Type System and a Pair of Waveguides 

分 类 号：O431.2[机械工程—光学工程]