Frequency conversion in a hybrid cavity-optomechanical system

We propose a scheme to realize frequency conversion of photons, using a hybrid system with a qubit coupled to both a resonator cavity and an optomechanical cavity. In this system, a high-energy photon can be converted into a low-energy photon plus a phonon and vice versa; the qubit works as an intermediate medium with its states unchanged. Moreover, the process can be exquisitely tuned by changing the frequency of the qubit or the resonator mode, providing additional control for the conversion. We further analyze the system dynamics and demonstrate two Rabi oscillation behaviors with dissipations. With the state-of-the-art techniques in cavity quantum electrodynamics and optomechanical systems, our proposal would be implemented and an efficient and controllable quantum light source can be achieved.

Automated summary

In this paper, we propose a scheme to achieve frequency conversion of photons using a hybrid system consisting of a qubit, a resonator cavity, and an optomechanical cavity. The system allows for the conversion of a high-energy photon into a low-energy photon and a phonon, and vice versa, with the qubit acting as an intermediary without changing its state. Additionally, the conversion process can be finely tuned by adjusting the frequency of the qubit or the resonator mode, providing additional control. We analyze the system dynamics and demonstrate two Rabi oscillation behaviors with dissipations. By utilizing state-of-the-art techniques in cavity quantum electrodynamics and optomechanical systems, our proposal can be implemented, leading to the realization of an efficient and controllable quantum light source.