Journal
APPLIED PHYSICS LETTERS
Volume 107, Issue 4, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4927429
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Funding
- German Federal Ministry of Education and Research (BMBF) through the VIP-project QSOURCE [03V0630]
- German Science Foundation (Deutsche Forschungsgemeinschaft, DFG) within the Collaborative Research Center [SFB 787]
- Yousef Jameel scholarship funds
- German Science Foundation [DFG: GRK 1782, SFB 1083]
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We 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. (C) 2015 AIP Publishing LLC.
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