Nonreciprocal Bundle Emissions of Quantum Entangled Pairs

TL;DR

This paper demonstrates a method to achieve directional, nonreciprocal emission of entangled photon-phonon and photon-magnon pairs using a spinning resonator, enabling precise control for quantum information applications.

Contribution

It introduces a novel approach to control multiquanta emissions via the Sagnac effect in a spinning resonator, enabling directional and switchable entangled pair emissions.

Findings

Achieved nonreciprocal, directional emission of entangled pairs.

Controlled simultaneous emission of different entangled pairs in opposite directions.

Potential for integration into hybrid quantum networks and on-chip quantum communication.

Abstract

Realizing precise control over multiquanta emission is crucial for quantum information processing, especially when integrated with advanced techniques of manipulating quantum states. Here, by spinning the resonator to induce the Sagnac effect, we can obtain nonreciprocal photon-phonon and photon-magnon super-Rabi oscillations under conditions of optically driving resonance transitions. Opening dissipative channels for such super-Rabi oscillations enables the realization of directional bundle emissions of entangled photon-phonon pairs and photon-magnon pairs by transferring pure multiquanta state to bundled multiquanta outside of the system. This nonreciprocal emission is a flexible switch that can be controlled with precision, and simultaneous emissions of different entangled pairs (such as photon-phonon or photon-magnon pairs) can even emerge but in opposite directions by driving the resonator from different directions. This ability to flexibly manipulate the system allows us to achieve directional entangled multiquanta emitters, and has also potential applications for building hybrid quantum networks and on-chip quantum communications.