Details
| Original language | English |
|---|---|
| Article number | eaay5195 |
| Journal | Science advances |
| Volume | 6 |
| Issue number | 13 |
| Publication status | Published - 27 Mar 2020 |
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.
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In: Science advances, Vol. 6, No. 13, eaay5195, 27.03.2020.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Two-photon quantum interference and entanglement at 2.1 μm
AU - Prabhakar, Shashi
AU - Shields, Taylor
AU - Dada, Adetunmise C.
AU - Ebrahim, Mehdi
AU - Taylor, Gregor G.
AU - Morozov, Dmitry
AU - Erotokritou, Kleanthis
AU - Miki, Shigehito
AU - Yabuno, Masahiro
AU - Terai, Hirotaka
AU - Gawith, Corin
AU - Kues, Michael
AU - Caspani, Lucia
AU - Hadfield, Robert H.
AU - Clerici, Matteo
N1 - Funding Information: M.C., S.P., R.H.H., and C.G. acknowledge the support from Innovate UK (project PEPE EP/R043299/1). M.C. and A.C.D. acknowledge the support from the UK Research and Innovation (UKRI) and the UK Engineering and Physical Sciences
PY - 2020/3/27
Y1 - 2020/3/27
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85082816274&partnerID=8YFLogxK
U2 - 10.1126/sciadv.aay5195
DO - 10.1126/sciadv.aay5195
M3 - Article
C2 - 32258399
AN - SCOPUS:85082816274
VL - 6
JO - Science advances
JF - Science advances
SN - 2375-2548
IS - 13
M1 - eaay5195
ER -