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Spontaneous conversion from virtual to real photons in the ultrastrong-coupling regime.

Spontaneous conversion from virtual to real photons in the ultrastrong-coupling regime.

Authors :
Stassi R
Ridolfo A
Di Stefano O
Hartmann MJ
Savasta S
Source :
Physical review letters [Phys Rev Lett] 2013 Jun 14; Vol. 110 (24), pp. 243601. Date of Electronic Publication: 2013 Jun 11.
Publication Year :
2013

Abstract

We show that a spontaneous release of virtual photon pairs can occur in a quantum optical system in the ultrastrong coupling regime. In this regime, which is attracting interest both in semiconductor and superconducting systems, the light-matter coupling rate Ω(R) becomes comparable to the bare resonance frequency of photons ω(0). In contrast to the dynamical Casimir effect and other pair creation mechanisms, this phenomenon does not require external forces or time dependent parameters in the Hamiltonian.

Details

Language :
English
ISSN :
1079-7114
Volume :
110
Issue :
24
Database :
MEDLINE
Journal :
Physical review letters
Publication Type :
Academic Journal
Accession number :
25165920
Full Text :
https://doi.org/10.1103/PhysRevLett.110.243601