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Generation and detection of polarization entanglement at 2.1 micron

Generation and detection of polarization entanglement at 2.1 micron
Generation and detection of polarization entanglement at 2.1 micron
Quantum-enhanced optical systems operating within the 2-2.5 µm spectral region have the potential to revolutionize emerging applications in communications, sensing and metrology. However, until now, sources of entangled photons have been realized mainly in the near-infrared 700-1550 nm spectral window. Above 2 µm lies an atmospheric transparency window with nearly one-third of the solar blackbody radiation as what is typical at telecom wavelengths. There is, therefore, a growing interest to deliver sources and detectors operating in this wavelength range for free-space optical communications and in emerging fields of high-sensitivity metrology, specifically, gravitational wave detection [1,2]. Here, using a 130 fs pulsed laser at wavelength 1.05 μm to pump custom-designed non-linear crystals for spontaneous parametric down-conversion (SPDC) process and tailored superconducting nanowire single-photon detectors (SNSPD), we demonstrate for the first-time two-photon quantum interference and polarization entanglement in the mid-infrared, at ≃ 2.1 μm.
Shields, Taylor
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Dada, Adetunmise
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Prabhakar, Shashi
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Ebrahim, Mehdi
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Taylor, Gregor
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Taylor, Gregor
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Morozov, Dmitry
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Erotokritou, Kleanthis
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Miki, Shigehito
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Yabuno, Masahiro
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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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Shields, Taylor
cfca18c5-662f-4712-b102-0621c82b8c07
Dada, Adetunmise
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Prabhakar, Shashi
62c0a826-340f-4781-b33a-d48f9ce6a921
Ebrahim, Mehdi
d1941f87-7405-4fa4-ba27-ef2937f6ef97
Taylor, Gregor
b187187c-6e65-45c0-a07e-6d51578dd2a3
Taylor, Gregor
b187187c-6e65-45c0-a07e-6d51578dd2a3
Morozov, Dmitry
ea9372bb-486d-4575-bb0d-bddd5d2cfd6f
Erotokritou, Kleanthis
67053174-155e-48ce-841b-eb3105971ced
Miki, Shigehito
55caea70-7483-434f-9cb3-dcf07a9731a9
Yabuno, Masahiro
4ed6151d-b785-4fc0-8208-f99e765b03f4
Terai, Hirotaka
718fd9f3-69c6-42d9-a792-28cb57208432
Gawith, Corin
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Kues, Michael
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Caspani, Lucia
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Hadfield, Robert
8c33cbe7-4c71-4198-9a96-029bbea93b22
Clerici, Matteo
9567b2f6-2f8f-4f04-8a74-eba390c4a430

Shields, Taylor, Dada, Adetunmise, Prabhakar, Shashi, Ebrahim, Mehdi, Taylor, Gregor, Taylor, Gregor, Morozov, Dmitry, Erotokritou, Kleanthis, Miki, Shigehito, Yabuno, Masahiro, Terai, Hirotaka, Gawith, Corin, Kues, Michael, Caspani, Lucia, Hadfield, Robert and Clerici, Matteo (2020) Generation and detection of polarization entanglement at 2.1 micron. In QTECH2020.

Record type: Conference or Workshop Item (Paper)

Abstract

Quantum-enhanced optical systems operating within the 2-2.5 µm spectral region have the potential to revolutionize emerging applications in communications, sensing and metrology. However, until now, sources of entangled photons have been realized mainly in the near-infrared 700-1550 nm spectral window. Above 2 µm lies an atmospheric transparency window with nearly one-third of the solar blackbody radiation as what is typical at telecom wavelengths. There is, therefore, a growing interest to deliver sources and detectors operating in this wavelength range for free-space optical communications and in emerging fields of high-sensitivity metrology, specifically, gravitational wave detection [1,2]. Here, using a 130 fs pulsed laser at wavelength 1.05 μm to pump custom-designed non-linear crystals for spontaneous parametric down-conversion (SPDC) process and tailored superconducting nanowire single-photon detectors (SNSPD), we demonstrate for the first-time two-photon quantum interference and polarization entanglement in the mid-infrared, at ≃ 2.1 μm.

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More information

Accepted/In Press date: 2 October 2020
Published date: 29 October 2020
Venue - Dates: Quantum Technology International Conference 2020, 2020-11-02 - 2020-11-04

Identifiers

Local EPrints ID: 446952
URI: http://eprints.soton.ac.uk/id/eprint/446952
PURE UUID: 03106726-5b0a-48e9-b3db-252f3e5587e9
ORCID for Corin Gawith: ORCID iD orcid.org/0000-0002-3502-3558

Catalogue record

Date deposited: 26 Feb 2021 17:35
Last modified: 11 Mar 2022 02:37

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Contributors

Author: Taylor Shields
Author: Adetunmise Dada
Author: Shashi Prabhakar
Author: Mehdi Ebrahim
Author: Gregor Taylor
Author: Gregor Taylor
Author: Dmitry Morozov
Author: Kleanthis Erotokritou
Author: Shigehito Miki
Author: Masahiro 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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