Boosting the Quantum State of a Cavity with Floquet Driving

TL;DR

This paper demonstrates that Floquet driving can coherently enhance the quantum state of a cavity in cavity QED systems, enabling the creation of highly-excited non-classical states in current experiments.

Contribution

It reveals a novel quantum state boosting mechanism via Floquet driving in cavity QED, facilitating advanced state preparation.

Findings

Floquet driving coherently boosts cavity quantum states.

The method enables preparation of highly-excited non-classical states.

Current experiments can implement the required Hamiltonian.

Abstract

The striking nonlinear effects exhibited by cavity QED systems make them a powerful tool in modern condensed matter and atomic physics. A recently discovered example is the quantized pumping of energy into a cavity by a strongly-coupled, periodically-driven spin. We uncover a remarkable feature of these energy pumps: they coherently translate, or boost, a quantum state of the cavity in the Fock basis. Current optical cavity and circuit QED experiments can realize the required Hamiltonian in a rotating frame. Boosting thus enables the preparation of highly-excited non-classical cavity states in near-term experiments.