Phase-preserving control of Floquet-engineered cavity quantum electrodynamics

TL;DR

This paper introduces a Floquet-engineered method for phase-preserving control of light-matter interactions in a modulated cavity, enabling coherent quantum information processing with minimal phase decoherence.

Contribution

It demonstrates phase-preserving control of TLS-cavity interactions in a Floquet framework, even with non-Markovian phonon effects, advancing quantum information techniques.

Findings

Phase-preserving TLS-cavity interaction achieved.

Non-Markovian phonon effects do not cause significant phase decoherence.

Floquet engineering enhances coherent control in quantum systems.

Abstract

We propose a Floquet-engineered framework for the coherent control of the light-matter interaction in a two-level system (TLS) located in a time-modulated cavity. Strictly phase-preserving operation of the TLS-cavity interaction is demonstrated, allowing the interrupt and retrieval of coherent Rabi oscillations without the loss of quantum information. By introducing a phonon reservoir, it is proved that the frequency instability induced from non-Markovian processes does not produce significant phase decoherence during Floquet modulation. Our results provide new insights into the fundamental physics of a driven quantum system and establish Floquet engineering as a powerful tool for coherent quantum information processing.