Mean-field dynamics of a Bose Josephson junction in an optical cavity

TL;DR

This paper investigates how a high-finesse optical cavity influences the mean-field dynamics of a Bose Josephson junction, revealing significant alterations and potential for coherent control and observation.

Contribution

It derives an effective classical Hamiltonian for the coupled system and analyzes the impact of strong condensate-field coupling on the junction's dynamics.

Findings

Strong condensate-field coupling drastically alters the junction's dynamics

The effective Hamiltonian enables phase portrait analysis of the system

Potential for in situ observation and coherent manipulation of the junction

Abstract

We study the mean-field dynamics of a Bose Josephson junction which is dispersively coupled to a single mode of a high-finesse optical cavity. An effective classical Hamiltonian for the Bose Josephson junction is derived and its dynamics is studied in the perspective of phase portrait. It is shown that the strong condensate-field coupling does alter the dynamics of the Bose Josephson junction drastically. The possibility of coherent manipulating and \textsl{in situ} observation of the dynamics of the Bose Josephson junction is discussed.