Single-photon superradiance from a quantum dot

TY - JOUR

T1 - Single-photon superradiance from a quantum dot

AU - Tighineanu, Petru

AU - Daveau, Raphaël Sura

AU - Lehmann, Tau Bernstorff

AU - E. Beere, Harvey

AU - A. Ritchie, David

AU - Lodahl, Peter

AU - Stobbe, Søren

PY - 2016/4/21

Y1 - 2016/4/21

N2 - We report on the observation of single-photon superradiance from an exciton in a semiconductor quantum dot. The confinement by the quantum dot is strong enough for it to mimic a two-level atom, yet sufficiently weak to ensure superradiance. The electrostatic interaction between the electron and the hole comprising the exciton gives rise to an anharmonic spectrum, which we exploit to prepare the superradiant quantum state deterministically with a laser pulse. We observe a fivefold enhancement of the oscillator strength compared to conventional quantum dots. The enhancement is limited by the base temperature of our cryostat and may lead to oscillator strengths above 1000 from a single quantum emitter at optical frequencies.

AB - We report on the observation of single-photon superradiance from an exciton in a semiconductor quantum dot. The confinement by the quantum dot is strong enough for it to mimic a two-level atom, yet sufficiently weak to ensure superradiance. The electrostatic interaction between the electron and the hole comprising the exciton gives rise to an anharmonic spectrum, which we exploit to prepare the superradiant quantum state deterministically with a laser pulse. We observe a fivefold enhancement of the oscillator strength compared to conventional quantum dots. The enhancement is limited by the base temperature of our cryostat and may lead to oscillator strengths above 1000 from a single quantum emitter at optical frequencies.

U2 - 10.1103/PhysRevLett.116.163604

DO - 10.1103/PhysRevLett.116.163604

M3 - Journal article

C2 - 27152804

SN - 0031-9007

VL - 116

JO - Physical Review Letters

JF - Physical Review Letters

M1 - 163604

ER -