Dissipation and detection of polaritons in the ultrastrong-coupling regime

Motoaki Bamba and Tetsuo Ogawa
Phys. Rev. A 86, 063831 – Published 26 December 2012

Abstract

We have investigated theoretically a dissipative polariton system in the ultrastrong light-matter coupling regime without using the rotating-wave approximation on system-reservoir coupling. Photons in a cavity and excitations in matter respectively couple two large ensembles of harmonic oscillators (photonic and excitonic reservoirs). Inheriting the quantum statistics of polaritons in the ultrastrong coupling regime, in the ground state of the whole system, the two reservoirs are not in the vacuum states but they are squeezed and correlated. We presume the reservoirs to be in this nonvacuum state in the master equation and in the input-output formalism with Langevin equations. Both approaches consistently guarantee the decay of the polariton system to its ground state; no photon detection is also obtained when the polariton system is in the ground state.

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  • Received 25 August 2012

DOI:https://doi.org/10.1103/PhysRevA.86.063831

©2012 American Physical Society

Authors & Affiliations

Motoaki Bamba* and Tetsuo Ogawa

  • Department of Physics, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan

  • *bamba@acty.phys.sci.osaka-u.ac.jp

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Issue

Vol. 86, Iss. 6 — December 2012

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