A tuneable telecom wavelength entangled light emitting diode deployed in an installed fibre network
| Autor: | R. Mark Stevenson, Andrew J. Shields, Martin B. Ward, Jan Huwer, Zi-Heng Xiang, Joanna Skiba-Szymanska, David J. P. Ellis, Ian Farrer, David A. Ritchie |
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| Přispěvatelé: | Huwer, Jan [0000-0002-1513-6504], Farrer, Ian [0000-0002-3033-4306], Ritchie, David A. [0000-0002-9844-8350], Apollo - University of Cambridge Repository, Huwer, J [0000-0002-1513-6504], Farrer, I [0000-0002-3033-4306], Ritchie, DA [0000-0002-9844-8350] |
| Rok vydání: | 2020 |
| Předmět: |
Optical communication
Physics::Optics General Physics and Astronomy lcsh:Astrophysics 02 engineering and technology Quantum entanglement 01 natural sciences Multiplexing 5108 Quantum Physics law.invention 4009 Electronics Sensors and Digital Hardware Photon entanglement 5102 Atomic Molecular and Optical Physics law lcsh:QB460-466 0103 physical sciences 010306 general physics 40 Engineering 639/766/1130/2799 Physics Quantum network business.industry 639/624/1075/187 article 639/766/483/3925 021001 nanoscience & nanotechnology lcsh:QC1-999 Wavelength Channel spacing 0210 nano-technology Telecommunications business 51 Physical Sciences lcsh:Physics Light-emitting diode |
| Zdroj: | Communications Physics, Vol 3, Iss 1, Pp 1-8 (2020) |
| ISSN: | 2399-3650 |
| DOI: | 10.1038/s42005-020-0390-7 |
| Popis: | Funder: China Scholarship Council (CSC); doi: https://doi.org/10.13039/501100004543 Funder: Toshiba Europe Limited Cambridge Trust Funder: RCUK | Engineering and Physical Sciences Research Council (EPSRC); doi: https://doi.org/10.13039/501100000266 Entangled light emitting diodes based on semiconductor quantum dots are promising devices for security sensitive quantum network applications, thanks to their natural lack of multi photon-pair generation. Apart from telecom wavelength emission, network integrability of these sources ideally requires electrical operation for deployment in compact systems in the field. For multiplexing of entangled photons with classical data traffic, emission in the telecom O-band and tuneability to the nearest wavelength channel in compliance with coarse wavelength division multiplexing standards (20 nm channel spacing) is highly desirable. Here we show a fully electrically operated telecom entangled light emitting diode with wavelength tuneability of more than 25 nm, deployed in an installed fibre network. With the source tuned to 1310.00 nm, we demonstrate multiplexing of true single entangled photons with classical data traffic and achieve entanglement fidelities above 94% on an installed fibre in a city. |
| Databáze: | OpenAIRE |
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