Microwave multiphoton conversion via coherently driven permanent dipole systems

TL;DR

This paper explores how a driven two-level system with permanent dipoles interacts with a microwave cavity to enable multiphoton quantum dynamics and convert photons between optical and microwave frequencies.

Contribution

It introduces a novel dispersive interaction regime where a driven two-level system couples to a microwave cavity via permanent dipoles, enabling multiphoton processes and frequency conversion.

Findings

Demonstrates multiphoton quantum dynamics in a dispersive regime

Shows photon conversion from optical to microwave frequencies

Highlights the role of permanent dipoles in cavity interactions

Abstract

We investigate the multiphoton quantum dynamics of a leaking single-mode quantized cavity field coupled with a resonantly driven two-level system possessing permanent dipoles. The frequencies of the interacting subsystems are being considered very different, e.g., microwave ranges for the cavity and optical domains for the frequency of the two-level emitter, respectively. In this way, the emitter couples to the resonator mode via its diagonal dipole moments only. Furthermore, the generalized Rabi frequency resulting form the external coherent driving of the two-level subsystem is assumed as well different from the resonator's frequency or its multiples. As a consequence, this highly dispersive interaction regime is responsible for the cavity multiphoton quantum dynamics and photon conversion from optical to microwave ranges, respectively.