2016/09/30 by Gaston Hornecker, Alexia Auffèves, Thomas Grange +1
Computer Science · Physics and Astronomy · #Condensed matter physics #Engineering physics #Materials science #Non-equilibrium thermodynamics #Phonon #Physics #Quantum Information and Cryptography #Quantum and electron transport phenomena #Quantum electrodynamics #Quantum mechanics #Semiconductor Quantum Structures and Devices #Solid-state #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevb.95.035404
published as Phys. Rev. B 95, 035404 (2017) · 10 pages, 6 figures
arxiv created 2016/09/30 · openalex publication_date 2017/01/05 · arxiv updated 2017/01/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The influence of electron-phonon interactions on the dynamics of a quantum dot coupled to a photonic cavity mode is investigated by using a nonequilibrium Green's function approach. Within a polaron frame, the self-consistent-Born approximation is used to treat the phonon-assisted scattering processes between the quantum dot polaron and the cavity. Two-time correlators of the quantum dot-cavity system are calculated by solving the Kadanoff--Baym equations, giving access to photon spectra and photon indistinguishability. The non-Markovian nature of the interaction with the phonon bath is shown to be very accurately described by our method in various regimes of cavity quantum electrodynamics (cavity-QED). The indistinguishability of the emitted photons emitted at zero temperature are found to be in very good agreement with a previously reported exact diagonalization approach [Phys. Rev. B 87, 081308 (2013)]. Besides, our method enables the calculations of photon indistinguishability at finite temperatures and for strong electron-phonon interactions. More generally, our method opens new avenues in the study of open quantum system dynamics coupled to non-Markovian environments.