2017/08/21 by Xun-Wei Xu, Xun‐Wei Xu, Aixi Chen +3
Engineering · Physics and Astronomy · #Advanced Fiber Laser Technologies #Circulator #Mechanical and Optical Resonators #Optical circulator #Optical fiber #Optics #Photon #Photonic and Optical Devices #Photonics #Physics #Quantum #Quantum mechanics #Resonator #cond-mat.mes-hall #physics.optics #quant-ph
paper · pdf · doi:10.1103/physreva.96.053853
published as Phys. Rev. A 96, 053853 (2017) · 13 pages, 10 figures. arXiv admin note: text overlap with arXiv:1703.03969
arxiv created 2017/08/21 · openalex created_date 2017/08/31 · openalex publication_date 2017/11/27 · arxiv updated 2017/12/06 · openalex updated_date 2026/08/05
We propose to construct a nonreciprocal single-photon frequency converter via multiple semi-infinite coupled-resonator waveguides (CRWs). We first demonstrate that the frequency of a single photon can be converted nonreciprocally through two CRWs, which are coupled indirectly by optomechanical interactions with two nondegenerate mechanical modes. Based on this nonreciprocity, two different single-photon circulators are proposed in the T-shaped waveguides consisting of three semi-infinite CRWs, which are coupled pairwise by optomechanical interactions. One circulator is proposed by using two nondegenerate mechanical modes and the other one is proposed by using three nondegenerate mechanical modes. Nonreciprocal single-photon frequency conversion is induced by breaking the time-reversal symmetry, and the optimal conditions for nonreciprocal frequency conversion are obtained. These proposals can be used to realize nonreciprocal frequency conversion of single photons in any two distinctive waveguides with different frequencies and they can allow for dynamic control of the direction of frequency conversion by tuning the phases of external driving lasers, which may have versatile applications in hybrid quantum networks.