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Nonreciprocal single-photon band structure in a coupled-spinning-resonator chain
Optics Express
|January 29, 2025
Summary
Researchers explored single-photon band structures in spinning resonator chains. Spinning resonators break time-reversal symmetry, enabling nonreciprocal band gaps for novel single-photon devices.
Area of Science:
- Quantum optics
- Condensed matter physics
- Photonics
Background:
- Single-photon transport is crucial for quantum technologies.
- Controlling light-matter interactions in resonator arrays is challenging.
- Breaking time-reversal symmetry is key for nonreciprocal devices.
Purpose of the Study:
- To investigate single-photon band structures in a one-dimensional coupled-spinning-resonator chain.
- To explore the role of resonator spinning in breaking time-reversal symmetry.
- To demonstrate the potential for creating nonreciprocal single-photon devices.
Main Methods:
- Analysis of single-photon band structure.
- Theoretical modeling of photon transport in a spinning resonator chain.
- Investigating the effect of angular velocity on band gap properties.
Main Results:
- Achieved nonreciprocal single-photon band gaps by breaking time-reversal symmetry through resonator spinning.
- Demonstrated that the width of these band gaps is tunable with angular velocity.
- Implemented a single-photon circulator with opposite photon cycling directions for different band gaps.
- Showcased the possibility of realizing reciprocal band structures by synchronized spinning.
Conclusions:
- Resonator spinning offers a novel method to control and switch single-photon band structures.
- This approach provides a new pathway for developing advanced single-photon devices.
- The findings open opportunities for novel nonreciprocal and reciprocal photonic functionalities.
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