期刊
LASER & PHOTONICS REVIEWS
卷 14, 期 7, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/lpor.201900404
关键词
nano-opto-electro-mechanical systems; nanobeam photonic crystal cavities; quantum dots; quantum nanophotonics; single photons; tunable filters
资金
- Danmarks Grundforskningsfond (DNRF) (Center for Hybrid Quantum Networks (Hy-Q))
- H2020 European Research Council (ERC) (SCALE) [FIPS 790206]
- ERC-Proof of Concept [FIPS 790206]
- Bundesministerium fur Bildung und Forschung (BMBF) [16KIS0867]
- Deutsche Forschungsgemeinschaft (DFG) [TRR 160, 383065199]
- Styrelsen for Forskning og Innovation (FI) [5072-00016B QUANTECH]
Semiconductor quantum dots in photonic integrated circuits enable scaling quantum-information processing to many single photons and quantum-optical gates. Obtaining high-purity and coherent single photons from quantum dots requires spectral filtering to select individual excitonic transitions. Here, an on-chip wavelength-tunable filter integrated with a single-photon source, which preserves the optical properties of the emitter, is demonstrated. Nanomechanical motion is used for tuning the resonant wavelength over 10 nm, enabling operation at cryogenic temperatures, and single-photon emission from a quantum dot under non-resonant excitation is demonstrated without resorting to free-space optical filters. These results are key for the development of fully integrated de-multiplexing, multi-path photon encoding schemes, and multi-emitter circuits.
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