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

作者：Shi, Ce; Cheng, Mu-Tian^*; Ma, Xiao-San; Wang, Dong; Huang, Xianshan; Wang, Bing; Zhang, Jia-Yan

来源：Chinese Physics Letters, 2018, 35(5): 054202.

DOI：10.1088/0256-307X/35/5/054202

• QUANTUM
• TRANSPORT
• GENERATION
• EMISSION

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.

• 出版日期2018-5
• 单位安徽工业大学