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Single-photon circulator by spinning optical resonators | JoVE Visualize

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Single-photon circulator by spinning optical resonators

Jing Li, Tian-Xiang Lu, Meiyu Peng

Optics Express|June 14, 2025

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Summary

We developed a novel four-port circulator for quantum networks. This device controls single photon flow at multiple frequencies, enabling advanced quantum simulations and communication by manipulating resonator rotation.

Area of Science:

Quantum optics
Quantum information science

Background:

Circulators are essential components in quantum networks and simulations.
Controlling single photon transport is key for advancing quantum technologies.

Purpose of the Study:

To propose and analyze a novel four-port circulator for regulating single photon flow.
To investigate the impact of resonator dynamics on multi-frequency photon circulation.

Main Methods:

Theoretical study of coherent single photon transmission.
Analysis of a coupled system involving two resonators and two waveguides.
Investigating the effects of static and differentially rotating resonators.

Main Results:

Achieved multi-frequency single photon circulation by differing resonator angular velocities.
Demonstrated complete routing of single photons between waveguides at specific frequencies.
Showed restoration of single-photon circulation by resonator rotation, overcoming backscattering.

Conclusions:

The proposed four-port circulator offers precise control over single photon transport at multiple frequencies.
Differential resonator rotation is a viable mechanism for achieving non-reciprocal photon routing.
This work provides a pathway for enhanced quantum network functionalities.

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Single-photon Circulator By Spinning Optical Resonators