Mainz 2017 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 12: Nano-Optics I
Q 12.7: Vortrag
Montag, 6. März 2017, 18:30–18:45, P 11
A deterministic twin-photon source in the solid-state — •Tobias Heindel1, Alexander Thoma1, Martin von Helversen1, Marco Schmidt1,2, Alexander Schlehahn1, Manuel Gschrey1, Peter Schnauber1, Jan-Hindrik Schulze1, André Strittmatter1, Jörn Beyer2, Sven Rodt1, Alexander Carmele3, Andreas Knorr3, and Stephan Reitzenstein1 — 1Institut für Festkörperphysik, Technische Universität Berlin, 10623 Berlin, Germany — 2Physikalisch-Technische Bundesanstalt, Abbestraße 1, 10587 Berlin, Germany — 3Institut für Theoretische Physik, Technische Universität Berlin, 10623 Berlin, Germany
To realize an integrated light source capable of emitting non-classical multi-photon states, is a fascinating, yet equally challenging task at the heart of quantum optics. Here, we propose and experimentally demonstrate the efficient, triggered generation of photon twins using the energy-degenerate biexciton-exciton radiative cascade of a single semiconductor quantum dot [1]. For this purpose, we select a quantum emitter whose exciton’s finestructure splitting equals the biexciton binding energy. Deterministically integrated within a microlens, this nanostructure emits photon twins at a rate of up to (234 ± 4) kHz. To directly observe the emitted twin-photon state, we employ a photon-number-resolving detection system based on a transition edge sensor, which enables the reconstruction of the emitted photon number distribution.
A. Thoma, T. Heindel et al., A bright triggered twin-photon source in the solid state, arXiv:1608.02768 (2016)