Work

Spontaneous Conversion from Virtual to Real Photons in the Ultrastrong-Coupling Regime

Year: 2013

Type: article

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.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.110.243601

Authors: R. Stassi, A. Ridolfo, O. Di Stefano, M. J. Hartmann, S. Savasta

Institutions: University of Messina, Technical University of Munich

Language: English

Topic: Strong Light-Matter Interactions

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funder: Deutsche Forschungsgemeinschaft

Award: G8320160877