Probing dynamical symmetry breaking using quantum-entangled photons

TL;DR

This paper introduces a novel method using entangled photon experiments to probe dynamical symmetry breaking in quantum systems, providing detailed insights into microscopic quantum interactions.

Contribution

It presents an input/output analysis of photon-correlation experiments with entangled photons interacting with a sample, revealing dynamical symmetry breaking details.

Findings

Output signals encode information about entanglement with microscopic states

Method applied to Dicke Model shows potential to detect symmetry breaking

Experimental approach offers new insights into quantum dynamical processes

Abstract

We present an input/output analysis of photon-correlation experiments whereby a quantum mechanically entangled bi-photon state interacts with a material sample placed in one arm of a Hong-Ou-Mandel (HOM) apparatus. We show that the output signal contains detailed information about subsequent entanglement with the microscopic quantum states in the sample. In particular, we apply the method to an ensemble of emitters interacting with a common photon mode within the open-system Dicke Model. Our results indicate considerable dynamical information concerning spontaneous symmetry breaking can be revealed with such an experimental system.