Two-photon quantum interference and entanglement at 2.1 μm

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
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID: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, Dr 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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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
301805Polarisation Entangled Photon EmitterMatteo ClericiEngineering and Physical Sciences Research Council (EPSRC)EP/R043299/1ENG - Electronics & Nanoscale Engineering
302459Infrared time-domain quantum opticsMatteo ClericiEngineering and Physical Sciences Research Council (EPSRC)EP/S001573/1ENG - Electronics & Nanoscale Engineering
304896EPSRC-IAA: Early Stage Commercialisation of a PET Imaging Agent for the Detection of Cardiovascular Disease and CancerAndrew SutherlandEngineering and Physical Sciences Research Council (EPSRC)EP/R511705/1Chemistry
171723Infrared imaging and sensing: the single photonRobert HadfieldEuropean Research Council (ERC)648604ENG - Electronics & Nanoscale Engineering
170574Integrated Photonic Quantum technologiesRobert HadfieldEngineering and Physical Sciences Research Council (EPSRC)EP/L024020/1ENG - Electronics & Nanoscale Engineering
190841UK Quantum Technology Hub in Enhanced Quantum ImagingMiles PadgettEngineering and Physical Sciences Research Council (EPSRC)EP/M01326X/1P&S - Physics & Astronomy