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Two-photon quantum interference and entanglement at 2.1μm

Two-photon quantum interference and entanglement at 2.1μm
Two-photon quantum interference and entanglement at 2.1μm
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 2090nm. 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.
2375-2548
Prabhakar, Shashi
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Shields, Taylor
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Dada, Adetunmise
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Ebrahim, Mehdi
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Taylor, Gregor G.
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Morozov, Dmitry
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Erotokritou, Kleanthis
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Miki, Shigehito
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Yabuno, Mashahiro
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Terai, Hirotaka
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Gawith, Corin
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Kues, Michael
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Caspani, Lucia
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Hadfield, Robert
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Clerici, Matteo
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Prabhakar, Shashi
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Shields, Taylor
cfca18c5-662f-4712-b102-0621c82b8c07
Dada, Adetunmise
59df6fc9-3ea0-4381-9be9-7834f0e77922
Ebrahim, Mehdi
d1941f87-7405-4fa4-ba27-ef2937f6ef97
Taylor, Gregor G.
713a1ca7-0979-4d95-b1ea-51daa51a3b26
Morozov, Dmitry
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Erotokritou, Kleanthis
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Miki, Shigehito
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Yabuno, Mashahiro
5f14d20b-73a1-468d-a329-bcb9660fe292
Terai, Hirotaka
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Gawith, Corin
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Kues, Michael
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Caspani, Lucia
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Hadfield, Robert
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Clerici, Matteo
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Prabhakar, Shashi, Shields, Taylor, Dada, Adetunmise, Ebrahim, Mehdi, Taylor, Gregor G., Morozov, Dmitry, Erotokritou, Kleanthis, Miki, Shigehito, Yabuno, Mashahiro, Terai, Hirotaka, Gawith, Corin, Kues, Michael, Caspani, Lucia, Hadfield, Robert and Clerici, Matteo (2020) Two-photon quantum interference and entanglement at 2.1μm. Science Advances, 6 (13), [eaay5195]. (doi:10.1126/sciadv.aay5195).

Record type: Article

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 2090nm. 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.

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Accepted/In Press date: 3 January 2020
Published date: 27 March 2020

Identifiers

Local EPrints ID: 439112
URI: http://eprints.soton.ac.uk/id/eprint/439112
ISSN: 2375-2548
PURE UUID: c347886b-abde-4547-9f52-8c2c4a5263d9
ORCID for Corin Gawith: ORCID iD orcid.org/0000-0002-3502-3558

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Date deposited: 03 Apr 2020 16:30
Last modified: 18 Feb 2021 16:54

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Contributors

Author: Shashi Prabhakar
Author: Taylor Shields
Author: Adetunmise Dada
Author: Mehdi Ebrahim
Author: Gregor G. Taylor
Author: Dmitry Morozov
Author: Kleanthis Erotokritou
Author: Shigehito Miki
Author: Mashahiro Yabuno
Author: Hirotaka Terai
Author: Corin Gawith ORCID iD
Author: Michael Kues
Author: Lucia Caspani
Author: Robert Hadfield
Author: Matteo Clerici

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