Single-photon superradiance from a quantum dot
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Single-photon superradiance from a quantum dot. / Tighineanu, Petru; Daveau, Raphaël Sura; Lehmann, Tau Bernstorff; E. Beere, Harvey; A. Ritchie, David; Lodahl, Peter; Stobbe, Søren.
I: Physical Review Letters, Bind 116, 163604, 21.04.2016.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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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
VL - 116
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
M1 - 163604
ER -
ID: 166498544