Passively stable distribution of polarisation entanglement over 192 km of deployed optical fibre

Sören Wengerowsky; Siddarth Koduru Joshi; Fabian Steinlechner; Julien R. Zichi; Bo Liu; Thomas Scheidl; Sergiy M. Dobrovolskiy; René van der Molen; Johannes W. N. Los; Val Zwiller; Marijn A. M. Versteegh; Alberto Mura; Davide Calonico; Massimo Inguscio; Anton Zeilinger; André Xuereb; Rupert Ursin

doi:10.1038/s41534-019-0238-8

Passively stable distribution of polarisation entanglement over 192 km of deployed optical fibre

Sören Wengerowsky (Korresp. Autor*in), Siddarth Koduru Joshi, Fabian Steinlechner, Julien R. Zichi, Bo Liu, Thomas Scheidl, Sergiy M. Dobrovolskiy, René van der Molen, Johannes W. N. Los, Val Zwiller, Marijn A. M. Versteegh, Alberto Mura, Davide Calonico, Massimo Inguscio, Anton Zeilinger, André Xuereb, Rupert Ursin (Korresp. Autor*in)

Quantenoptik, Quantennanophysik und Quanteninformation

Veröffentlichungen: Beitrag in Fachzeitschrift › Artikel › Peer Reviewed

Abstract

Quantum key distribution (QKD) based on entangled photon pairs holds the potential for repeater-based quantum networks connecting clients over long distance. We demonstrate long-distance entanglement distribution by means of polarisation-entangled photon pairs through two successive deployed 96 km-long telecommunications fibres in the same submarine cable. One photon of each pair was detected directly after the source, while the other travelled the fibre cable in both directions for a total distance of 192 km and attenuation of 48 dB. The observed two-photon Bell state exhibited a fidelity 85% $\pm$ 2% and was stable over several hours. We employed neither active stabilisation of the quantum state nor chromatic dispersion compensation for the fibre.

Originalsprache	Englisch
Aufsatznummer	5
Seitenumfang	5
Fachzeitschrift	npj Quantum Information
Jahrgang	6
Ausgabenummer	1
DOIs	https://doi.org/10.1038/s41534-019-0238-8
Publikationsstatus	Veröffentlicht - 2020

ÖFOS 2012

103025 Quantenmechanik
103026 Quantenoptik

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10.1038/s41534-019-0238-8Lizenz: CC BY 4.0

https://phaidra.univie.ac.at/o:1425508Lizenz: CC BY 4.0
https://arxiv.org/abs/1907.04864Lizenz: Nicht angegeben

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Verknüpfung zur Publikation in Scopus

Zitationsweisen

Wengerowsky, S., Joshi, S. K., Steinlechner, F., Zichi, J. R., Liu, B., Scheidl, T., Dobrovolskiy, S. M., Molen, R. V. D., Los, J. W. N., Zwiller, V., Versteegh, M. A. M., Mura, A., Calonico, D., Inguscio, M., Zeilinger, A., Xuereb, A., & Ursin, R. (2020). Passively stable distribution of polarisation entanglement over 192 km of deployed optical fibre. npj Quantum Information, 6(1), Artikel 5. https://doi.org/10.1038/s41534-019-0238-8

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title = "Passively stable distribution of polarisation entanglement over 192 km of deployed optical fibre",

abstract = " Quantum key distribution (QKD) based on entangled photon pairs holds the potential for repeater-based quantum networks connecting clients over long distance. We demonstrate long-distance entanglement distribution by means of polarisation-entangled photon pairs through two successive deployed 96 km-long telecommunications fibres in the same submarine cable. One photon of each pair was detected directly after the source, while the other travelled the fibre cable in both directions for a total distance of 192 km and attenuation of 48 dB. The observed two-photon Bell state exhibited a fidelity 85% $\pm$ 2% and was stable over several hours. We employed neither active stabilisation of the quantum state nor chromatic dispersion compensation for the fibre. ",

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author = "S{\"o}ren Wengerowsky and Joshi, {Siddarth Koduru} and Fabian Steinlechner and Zichi, {Julien R.} and Bo Liu and Thomas Scheidl and Dobrovolskiy, {Sergiy M.} and Molen, {Ren{\'e} van der} and Los, {Johannes W. N.} and Val Zwiller and Versteegh, {Marijn A. M.} and Alberto Mura and Davide Calonico and Massimo Inguscio and Anton Zeilinger and Andr{\'e} Xuereb and Rupert Ursin",

note = "Publisher Copyright: {\textcopyright} 2020, The Author(s).",

year = "2020",

doi = "10.1038/s41534-019-0238-8",

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volume = "6",

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Wengerowsky, S, Joshi, SK, Steinlechner, F, Zichi, JR, Liu, B, Scheidl, T, Dobrovolskiy, SM, Molen, RVD, Los, JWN, Zwiller, V, Versteegh, MAM, Mura, A, Calonico, D, Inguscio, M, Zeilinger, A, Xuereb, A & Ursin, R 2020, 'Passively stable distribution of polarisation entanglement over 192 km of deployed optical fibre', npj Quantum Information, Jg. 6, Nr. 1, 5. https://doi.org/10.1038/s41534-019-0238-8

TY - JOUR

T1 - Passively stable distribution of polarisation entanglement over 192 km of deployed optical fibre

AU - Wengerowsky, Sören

AU - Joshi, Siddarth Koduru

AU - Steinlechner, Fabian

AU - Zichi, Julien R.

AU - Liu, Bo

AU - Scheidl, Thomas

AU - Dobrovolskiy, Sergiy M.

AU - Molen, René van der

AU - Los, Johannes W. N.

AU - Zwiller, Val

AU - Versteegh, Marijn A. M.

AU - Mura, Alberto

AU - Calonico, Davide

AU - Inguscio, Massimo

AU - Zeilinger, Anton

AU - Xuereb, André

AU - Ursin, Rupert

PY - 2020

Y1 - 2020

N2 - Quantum key distribution (QKD) based on entangled photon pairs holds the potential for repeater-based quantum networks connecting clients over long distance. We demonstrate long-distance entanglement distribution by means of polarisation-entangled photon pairs through two successive deployed 96 km-long telecommunications fibres in the same submarine cable. One photon of each pair was detected directly after the source, while the other travelled the fibre cable in both directions for a total distance of 192 km and attenuation of 48 dB. The observed two-photon Bell state exhibited a fidelity 85% $\pm$ 2% and was stable over several hours. We employed neither active stabilisation of the quantum state nor chromatic dispersion compensation for the fibre.

AB - Quantum key distribution (QKD) based on entangled photon pairs holds the potential for repeater-based quantum networks connecting clients over long distance. We demonstrate long-distance entanglement distribution by means of polarisation-entangled photon pairs through two successive deployed 96 km-long telecommunications fibres in the same submarine cable. One photon of each pair was detected directly after the source, while the other travelled the fibre cable in both directions for a total distance of 192 km and attenuation of 48 dB. The observed two-photon Bell state exhibited a fidelity 85% $\pm$ 2% and was stable over several hours. We employed neither active stabilisation of the quantum state nor chromatic dispersion compensation for the fibre.

KW - quant-ph

KW - SYSTEM

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DO - 10.1038/s41534-019-0238-8

M3 - Article

SN - 2056-6387

VL - 6

JO - npj Quantum Information

JF - npj Quantum Information

IS - 1

M1 - 5

ER -

Passively stable distribution of polarisation entanglement over 192 km of deployed optical fibre

Abstract

ÖFOS 2012

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