Fermionized photons in an array of driven dissipative nonlinear cavities

TL;DR

This paper theoretically studies a 1D array of nonlinear microcavities, revealing strongly correlated photon states analogous to a Tonks-Girardeau gas, with observable signatures in absorption and emission correlations.

Contribution

It introduces a novel theoretical framework for observing fermionized photons in driven dissipative cavity arrays, highlighting strong correlation effects in optical responses.

Findings

Strong correlations manifest in absorption spectra

Intensity correlations reveal fermionization effects

Potential for experimental realization in solid-state devices

Abstract

We theoretically investigate the optical response of a one-dimensional array of strongly nonlinear optical microcavities. When the optical nonlinearity is much larger than both losses and inter-cavity tunnel coupling, the non-equilibrium steady state of the system is reminiscent of a strongly correlated Tonks-Girardeau gas of impenetrable bosons. Signatures of strong correlations are identified in the absorption spectrum of the system, as well as in the intensity correlations of the emitted light. Possible experimental implementations in state-of-the-art solid-state devices are discussed.