Measuring the effective phonon density of states of a quantum dot in cavity quantum electrodynamics

TY - JOUR

T1 - Measuring the effective phonon density of states of a quantum dot in cavity quantum electrodynamics

AU - Madsen, Kristian Høeg

AU - Kær, P.

AU - Kreiner-Møller, Asger

AU - Stobbe, Søren

AU - Nysteen, A.

AU - Mørk, J.

AU - Lodahl, Peter

PY - 2013/7/24

Y1 - 2013/7/24

N2 - We employ detuning-dependent decay-rate measurements of a quantum dot in a photonic-crystal cavity to study the influence of phonon dephasing in a solid-state quantum-electrodynamics experiment. The experimental data agree with a microscopic non-Markovian model accounting for dephasing from longitudinal acoustic phonons, and the analysis explains the difference between nonresonant cavity feeding in different nanocavities. From the comparison between experiment and theory we extract the effective phonon density of states experienced by the quantum dot in the nanocavity. This quantity determines all phonon dephasing properties of the system and is found to be described well by a theory of bulk phonons

AB - We employ detuning-dependent decay-rate measurements of a quantum dot in a photonic-crystal cavity to study the influence of phonon dephasing in a solid-state quantum-electrodynamics experiment. The experimental data agree with a microscopic non-Markovian model accounting for dephasing from longitudinal acoustic phonons, and the analysis explains the difference between nonresonant cavity feeding in different nanocavities. From the comparison between experiment and theory we extract the effective phonon density of states experienced by the quantum dot in the nanocavity. This quantity determines all phonon dephasing properties of the system and is found to be described well by a theory of bulk phonons

U2 - 10.1103/PhysRevB.88.045316

DO - 10.1103/PhysRevB.88.045316

M3 - Journal article

SN - 2469-9950

VL - 88

SP - 045316

JO - Physical Review B

JF - Physical Review B

IS - 4

ER -