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Updated: Dec 5, 2025
A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
Published on: September 5, 2019
Nonreciprocal Optomechanical Entanglement against Backscattering Losses
Ya-Feng Jiao1, Sheng-Dian Zhang1, Yan-Lei Zhang2,3
1Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, Department of Physics and Synergetic Innovation Center for Quantum Effects and Applications, Hunan Normal University, Changsha 410081, China.
We demonstrate a novel method for nonreciprocal quantum entanglement between light and motion using a spinning resonator. This approach offers robust quantum entanglement, even with losses, enabling new quantum technologies.
Area of Science:
- Quantum optics
- Quantum acoustics
- Condensed matter physics
Background:
- Quantum entanglement is a fundamental resource for quantum information processing.
- Achieving directional control over quantum interactions (nonreciprocity) is crucial for scalable quantum systems.
- Random losses and backscattering pose significant challenges to maintaining quantum entanglement.
Purpose of the Study:
- To propose and theoretically investigate a method for achieving nonreciprocal quantum entanglement between light and motion.
- To demonstrate the robustness of this entanglement against random losses.
- To explore applications in quantum information processing and sensing.
Main Methods:
- Utilizing the Sagnac effect in a spinning resonator to split counterpropagating light.
- Entangling photons and phonons through directional light-matter interaction.
- Analyzing the impact of backscattering losses on entanglement fidelity.
Main Results:
- Strong directional quantum entanglement between photons and phonons is achieved.
- The entanglement shows counterintuitive robustness against random losses.
- Significant entanglement revival against backscattering losses is demonstrated.
Conclusions:
- The proposed method enables quantum nonreciprocity without classical nonreciprocity.
- This work offers a pathway to engineer robust quantum resources for noise-tolerant quantum processors.
- Applications include chiral quantum networks and backaction-immune quantum sensors.
