Regensburg 2016 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 40: On-Chip Quantum Photonics II
HL 40.1: Hauptvortrag
Dienstag, 8. März 2016, 14:45–15:15, H16
On-chip generation, routing and detection of nonclassical light — •Kai Müller1,2, Kevin A. Fischer1, Constantin Dory1, Günther Reithmaier2, Fabian Flassig2, Konstantin G. Lagoudakis1, Tomas Sarmiento1, Michael Kaniber2, Jonathan J. Finley2, and Jelena Vuckovic1 — 1E. L. Ginzton Laboratory, Stanford University, Stanford, California 94305, USA — 2Walter Schottky Institut, Am Coulombwall 4, 85386 Garching, Germany
Nonclassical light can be generated on chip using self-assembled quantum dots strongly coupled to photonic crystal cavities. However, the highly dissipative nature of such systems typically limits the achievable fidelities. Here we show that detuning emitter and cavity mode [1] and understanding the coupling to phonons [2] facilitates high-fidelity generation of single photons. Moreover, by exploiting a novel self-homodyne suppression technique [3] we demonstrate generation of highly-indistinguishable photons [4].
On-chip detection can be realized by integration of superconducting single photon detectors. To this ends, we fabricate patterned NbN films directly onto GaAs waveguides. The absorption of a single photon produces a measurable electric signal which allows us to demonstrate on-chip detection of emission from single quantum dots [5-6].
[1] K. Müller et al. Phys. Rev. Lett. 114, 233601 (2015) [2] K. Müller et al. Phys. Rev. X. 5, 031006 (2015) [3] K. A. Fischer et al. arXiv:1512.04102 (2015) [4] K. Müller et al. arXiv:1512.05626 (2015) [5] G. Reithmaier et al. Scientific Reports 3, 1901 (2013) [6] G. Reithmaier et al. Nano Letters, 15 (8), 5208 (2015)