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Stochastic light in a cavity: A Brownian particle in a scalar potential? by Busink, J.; Ackermans, P.; Cognee, K. G.; Rodriguez, S. R. K. is a scholarly article available to read on EtoBox.

What is Stochastic light in a cavity: A Brownian particle in a scalar potential? about?

The non-equilibrium dynamics of stochastic light in a coherently-driven nonlinear cavity resembles the equilibrium dynamics of a Brownian particle in a scalar potential. This resemblance has been known for decades, but the correspondence between the two systems has never been properly assessed. Here we demonstrate that this correspondence can be exact, approximate, or break down, depending on the cavity nonlinear response and driving frequency. For weak on-resonance driving, the nonlinearity vanishes and the correspondence is exact: The cavity dissipation and driving amplitude define a scalar potential, the noise variance defines an effective temperature, and the intra-cavity field satisfies Boltzmann statistics. For moderately strong non-resonant driving, the correspondence is approximate: We introduce a potential that approximately captures the nonlinear dynamics of the intra-cavity field, and we quantify the accuracy of this approximation via deviations from Boltzmann statistics. For very strong non-resonant driving, the correspondence breaks down: The intra-cavity field dynamics is governed by non-conservative forces which preclude a description based on a scalar potential only

Author

Busink, J.; Ackermans, P.; Cognee, K. G.; Rodriguez, S. R. K.

Published

2021

Language

EN