Single-photon emission at a rate of 143 MHz from a deterministic quantum-dot microlens triggered by a mode-locked vertical-external-cavity surface-emitting laser
2015; American Institute of Physics; Volume: 107; Issue: 4 Linguagem: Inglês
10.1063/1.4927429
ISSN1520-8842
AutoresAlexander Schlehahn, Mahmoud Gaafar, Max Vaupel, Manuel Gschrey, Peter Schnauber, J.-H. Schulze, Sven Rodt, A. Strittmatter, W. Stolz, Arash Rahimi‐Iman, Tobias Heindel, Martín Koch, Stephan Reitzenstein,
Tópico(s)Photonic and Optical Devices
ResumoWe report on the realization of a quantum dot (QD) based single-photon source with a record-high single-photon emission rate. The quantum light source consists of an InGaAs QD which is deterministically integrated within a monolithic microlens with a distributed Bragg reflector as back-side mirror, which is triggered using the frequency-doubled emission of a mode-locked vertical-external-cavity surface-emitting laser (ML-VECSEL). The utilized compact and stable laser system allows us to excite the single-QD microlens at a wavelength of 508 nm with a pulse repetition rate close to 500 MHz at a pulse width of 4.2 ps. Probing the photon statistics of the emission from a single QD state at saturation, we demonstrate single-photon emission of the QD-microlens chip with g(2)(0) < 0.03 at a record-high single-photon flux of (143 ± 16) MHz collected by the first lens of the detection system. Our approach is fully compatible with resonant excitation schemes using wavelength tunable ML-VECSELs, which will optimize the quantum optical properties of the single-photon emission in terms of photon indistinguishability.
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