Polaron relaxation in self-assembled quantum dots: Breakdown of the semi-classical model

Abstract

We calculate the lifetime of conduction band excited states in self-assembled quantum dots by taking into account LO-phonon-electron interaction and various anharmonic phonon couplings. We show that polaron relaxation cannot be accurately described by a semi-classical model. The contributions of different anharmonic decay channels are shown to depend strongly on the polaron energy. We calculate the energy dependence of polaron lifetime and compare our results to available experimental measurements of polaron decay time in InAs/GaAs quantum dots.

arXiv comment5 pages, 4 figure, accepted for publication in Phys. Rev. B (Rapid Com.)

References in corpus (2)

• Evidence for excitonic polarons in InAs/GaAs quantum dots
• Hole-LO phonon interaction in InAs/GaAs quantum dots

Cited by in corpus (15)

• Highly indistinguishable single photons from incoherently and coherently excited GaAs quantum dots
• Electron transport in quantum wire superlattices
• Two-photon interference from a quantum dot--microcavity: Persistent pure-dephasing and suppression of time-jitter
• Intrinsic and environmental effects on the interference properties of a high-performance quantum dot single photon source
• Nanowire terahertz quantum cascade lasers
• Decoherence in quantum dots due to real and virtual transitions: a non-perturbative calculation
• Polaron relaxation in a quantum dot due to anharmonic coupling within a mean-field approach
• Terahertz Lasing at Roomtemperature: Numerical Study of a Vertical-Emitting Quantum Cascade Laser Based on a Quantum Dot Superlattice
• Dark Exciton Preparation in a Quantum Dot by a Longitudinal Light Field Tuned to Higher Exciton States
• Two-phonon polaron resonances in self-assembled quantum dots
• Optical phonon scattering and theory of magneto-polarons in a quantum cascade laser in a strong magnetic field
• Electronic phase coherence versus dissipation in solid-state quantum devices: Two approximations are better than one
• Nanomechanical effects in an Andreev quantum dot
• Vibron-vibron coupling from ab initio molecular dynamics simulations of a silicon cluster
• Controlling electronic and adiabatic isolation of quantum dots from the substrate: An ionization-energy theoretic study