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9 March 2020 Strain spectrally-tunable single-photon source based on a quantum dot in microcavity (Conference Presentation)
Magdalena Moczala-Dusanowska, Łukasz Dusanowski, Stefan Gerhardt, Yu Ming He, Marcus Reindl, Armando Rastelli, Rinaldo Trotta, Niels Gregersen, Sven Höfling, Christian Schneider
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Proceedings Volume 11274, Physics and Simulation of Optoelectronic Devices XXVIII; 112740Q (2020) https://doi.org/10.1117/12.2544193
Event: SPIE OPTO, 2020, San Francisco, California, United States
Abstract
Epitaxially grown self-assembled quantum dots (QDs) are promising candidates for an efficient single-photon generation. In order to maximize the number of photons extracted from the device, QDs are frequently embedded into photonic structures such as micro-cavities. Once the QD is positioned inside an optical cavity, the Purcell effect ensures that light is emitted predominantly into the cavity mode. In this contribution, we demonstrate results of emission tuning of QDs inserted in micro-cavities. A sample containing an InAs/GaAs QDs embedded in a planar cavity based on Bragg reflectors has been integrated onto the PMN-PT piezo crystal. Subsequently, micro-cavities have been fabricated by electron-beam lithography and reactive ion etching. The application of external stress produces linear shifts of QDs emission which could be tuned into the resonance with fundamental cavity mode and allow enhancement of QD emission due to the Purcell effect.
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Magdalena Moczala-Dusanowska, Łukasz Dusanowski, Stefan Gerhardt, Yu Ming He, Marcus Reindl, Armando Rastelli, Rinaldo Trotta, Niels Gregersen, Sven Höfling, and Christian Schneider "Strain spectrally-tunable single-photon source based on a quantum dot in microcavity (Conference Presentation)", Proc. SPIE 11274, Physics and Simulation of Optoelectronic Devices XXVIII, 112740Q (9 March 2020); https://doi.org/10.1117/12.2544193
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KEYWORDS
Quantum dots
Quantum efficiency
Indium arsenide
Optical resonators
Photonic microstructures
Photonics systems
Photons
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