Prabhakar, S. et al. (2020) Two-photon quantum interference and entanglement at 2.1 μm. Science Advances, 6(13), eaay5195. (doi: 10.1126/sciadv.aay5195)
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Abstract
Quantum-enhanced optical systems operating within the 2- to 2.5-μm spectral region have the potential to revolutionize emerging applications in communications, sensing, and metrology. However, to date, sources of entangled photons have been realized mainly in the near-infrared 700- to 1550-nm spectral window. Here, using custom-designed lithium niobate crystals for spontaneous parametric down-conversion and tailored superconducting nanowire single-photon detectors, we demonstrate two-photon interference and polarization-entangled photon pairs at 2090 nm. These results open the 2- to 2.5-μm mid-infrared window for the development of optical quantum technologies such as quantum key distribution in next-generation mid-infrared fiber communication systems and future Earth-to-satellite communications.
Item Type: | Articles |
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Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Haji Ebrahim, Mehdi and Hadfield, Professor Robert and Dada, Dr Adetunmise and Shields, Mr Taylor and Kues, Dr Michael and Erotokritou, Mr Kleanthis and Morozov, Dr Dmitry and Clerici, Professor Matteo and Taylor, Gregor and Prabhakar, Dr Shashi |
Authors: | Prabhakar, S., Shields, T., Dada, A. C., Ebrahim, M., Taylor, G. G., Morozov, D., Erotokritou, K., Miki, S., Yabuno, M., Terai, H., Gawith, C., Kues, M., Caspani, L., Hadfield, R. H., and Clerici, M. |
College/School: | College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering |
Journal Name: | Science Advances |
Publisher: | American Association for the Advancement of Science |
ISSN: | 2375-2548 |
ISSN (Online): | 2375-2548 |
Published Online: | 27 March 2020 |
Copyright Holders: | Copyright © 2020 The Authors |
First Published: | First published in Science Advances 6(13): eaay5195 |
Publisher Policy: | Reproduced under a Creative Commons License |
Data DOI: | 10.5525/gla.researchdata.882 |
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