DPG Phi
Verhandlungen
Verhandlungen
DPG

Berlin 2018 – scientific programme

Parts | Days | Selection | Search | Updates | Downloads | Help

HL: Fachverband Halbleiterphysik

HL 46: Quantum dots and wires: Optical properties III

HL 46.8: Talk

Thursday, March 15, 2018, 17:00–17:15, A 151

Pure single-photon emission from InGaAs QDs in a tunable fiber-based external mirror microcavity — •Thomas Herzog1, Marc Sartison1, Sascha Kolatschek1, Stefan Hepp1, Alexander Bommer2, Christoph Pauly3, Frank Mücklich3, Christoph Becher2, Simone Luca Portalupi1, Michael Jetter1, and Peter Michler11Institut für Halbleiteroptik und Funktionelle Grenzflächen, Center for Integrated Quantum Science and Technology (IQST) and SCoPE, University of Stuttgart, Allmandring 3, 70569 Stuttgart — 2Universität des Saarlandes, Fachrichtung 7.2 (Experimentalphysik), Campus E2.6, 66123 Saarbrücken, Germany — 3Lehrstuhl für Funktionswerkstoffe, Materialwissenschaft und Werkstofftechnik, 66123 Saarbrücken Germany

Cavity QED is extensively used in many solid-state systems in order to improve the quantum-emitter performances and accessing interesting physical regimes. It is essential that the cavity mode matches the emitter wavelength perfectly. In this work, we present an open fiber-based Fabry-Pérot cavity with a finesse of 140 coupled to single-photon emission by In(Ga)As quantum dots. We are able to match every emitter inside the cavity spatially and spectrally by precisely tuning the cavity in subnanometric resolution. Additionally, by using state-of-the-art photolithography we are able to deterministically relocate selected emitters. This allows comparing their behavior in resonance to the cavity and without any cavity effects. We find Purcell enhancement up to a factor of 4.5, while still having single-photon emission with a second-order correlation function limited only by the detector noise.

100% | Mobile Layout | Deutsche Version | Contact/Imprint/Privacy
DPG-Physik > DPG-Verhandlungen > 2018 > Berlin