Entanglement and the Phase Transition in Single Mode Superradiance

Preprint

2 September 2003

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.quant-ph/0309027

Abstract

We consider the entanglement properties of the quantum phase transition in the single-mode superradiance model, involving the interaction of a boson mode and an ensemble of atoms. For infinite system size, the atom-field entanglement of formation diverges logarithmically with the correlation length exponent. Using a continuous variable representation, we compare this to the divergence of the entropy in conformal field theories, and derive an exact expression for the scaled concurrence and the cusp-like non-analyticity of the momentum squeezing.

Keywords

SINGLE MODE SUPERRADIANCE
ENTANGLEMENT PROPERTIES
PHASE TRANSITION
SYSTEM SIZE
TRANSITION
ATOMS

All Related Versions

Version 1, 2003-09-02, ArXiv
Published version: Physical Review Letters, 92 (7), 073602.

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