Tunable Single-Photon Nonreciprocal Transmission and Directional Routing in a Microresonator-Waveguide System with Multiple Coupling Points
Abstract
We investigate the controllable single-photon transport via a microresonator coupled to two meandering waveguides at multiple coupling points. Using the analytical expressions of the single-photon scattering amplitudes obtained by the real-space Hamiltonian, the transport characteristics in the waveguide system are demonstrated. These results show that the perfectly nonreciprocal transmission in a single waveguide and the directional routing approaching the unity probability in two waveguides can be achieved by adjusting the resonator-waveguide coupling related to the phase parameter, arising from the phase-dependent interference effect of the multiple point couplings of the resonator. Our proposal may have wide potentials in quantum information processing.
Fields of Study & Subjects
Mechanical and Optical Resonators
Quantum Information and Cryptography
Photonic and Optical Devices
Publication details
- Journal / source
- Journal of Modern Physics
- Publisher
- Scientific Research Publishing, Inc.
- Volume
- 17
- Issue
- 02
- Pages
- 124–138
- Publication date
- 1 January 2026