Perfect Intrinsic Squeezing at the Superradiant Phase Transition Critical Point
Quantum Physics
2023-03-01 v1 Optics
Abstract
The ground state of the photon-matter coupled system described by the Dicke model is found to be perfectly squeezed at the quantum critical point of the superradiant phase transition (SRPT). In the presence of the counter-rotating photon-atom coupling, the ground state is analytically expressed as a two-mode squeezed vacuum in the basis of photons and atomic collective excitations. The variance of a quantum fluctuation in the two-mode basis vanishes at the SRPT critical point, with its conjugate fluctuation diverging, ideally satisfying the Heisenberg uncertainty principle.
Keywords
Cite
@article{arxiv.2009.02630,
title = {Perfect Intrinsic Squeezing at the Superradiant Phase Transition Critical Point},
author = {Kenji Hayashida and Takuma Makihara and Nicolas Marquez Peraca and Diego Fallas Padilla and Han Pu and Junichiro Kono and Motoaki Bamba},
journal= {arXiv preprint arXiv:2009.02630},
year = {2023}
}
Comments
6 pages, 1 figure