Regensburg 2016 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
HL: Fachverband Halbleiterphysik
HL 48: Quantum Dots and Wires: Microcavities
HL 48.4: Vortrag
Mittwoch, 9. März 2016, 10:15–10:30, H15
Deterministic generation of bright single resonance fluorescence photons from a Purcell-enhanced quantum dot-micropillar system — •Stefan Gerhardt1, Sebastian Unsleber1, Sebastian Maier1, Yu-Ming He1,3, Chao-Yang Lu3, Jian-Wei Pan3, Martin Kamp1, Christian Schneider1, and Sven Hoefling1,2 — 1Technische Physik, Physikalisches Institut and Wilhelm Conrad Roentgen-Research Center for Complex Material Systems, Universitaet Wuerzburg, Am Hubland, 97074 Wuerzburg — 2SUPA, School of Physics and Astronomy, University of St Andrews, St Andrews, KY16 9SS, United Kingdom — 3Hefei National Laboratory for Physical Sciences at the Microscale and Department of Modern Physics & CAS Center for Excellence and Synergetic Innovation Center in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
We report on the observation of bright emission of single photons under pulsed resonance fluorescence conditions from a single quantum dot (QD) in a micropillar cavity. The brightness of the QD fluorescence is greatly enhanced via the coupling to the fundamental mode of a micropillar with an extraction efficiency of (20.8 ± 0.8) % per linear polarization basis with a g(2)(0) of 0.072 ± 0.011 at a QD-cavity detuning of 75 µeV. We observe the first Rabi-oscillation in a weakly coupled quantum dot-micropillar system under coherent pulsed optical excitation, which enables us to deterministically populate the excited QD state.