Multichromatic Floquet engineering of quantum dissipation

TL;DR

This paper develops a framework for multichromatic Floquet driving in quantum systems, deriving an effective master equation that captures slow dynamics, including tunable dissipation, with applications to phase noise and incoherent processes.

Contribution

It introduces a method to model multichromatic Floquet driving using an effective master equation, extending beyond monochromatic approaches.

Findings

Effective master equation captures slow dynamics under multichromatic driving.

Dissipation effects like phase noise and incoherent emission are emulated.

Framework enables tunable dissipation control in quantum systems.

Abstract

The monochromatic driving of a quantum system is a successful technique in quantum simulations, well captured by an effective Hamiltonian approach, and with applications in artificial gauge fields and topological engineering. In this letter, we investigate the modeling of multichromatic Floquet driving for the slow degrees of freedom. Within a well-defined range of parameters, we show that the time coarse-grained dynamics of such a driven closed quantum system is encapsulated in an effective Master equation for the time-averaged density matrix, that evolves under the action of an effective Hamiltonian and tunable Lindblad-type dissipation/quantum gain terms. As an application, we emulate the dissipation induced by phase noise and incoherent emission/absorption processes in the bichromatic driving of a two-level system.