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1. WO2020112347 - QUANTUM KEY DISTRIBUTION SYSTEMS HAVING LOW LOSS DISPERSION LIMITING FIBERS

Publication Number WO/2020/112347
Publication Date 04.06.2020
International Application No. PCT/US2019/060989
International Filing Date 12.11.2019
IPC
H04B 10/2507 2013.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
10Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
25Arrangements specific to fibre transmission
2507for the reduction or elimination of distortion or dispersion
H04B 10/2513 2013.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
10Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
25Arrangements specific to fibre transmission
2507for the reduction or elimination of distortion or dispersion
2513due to chromatic dispersion
H04B 10/70 2013.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
10Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
70Photonic quantum communication
H04L 9/08 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
9Arrangements for secret or secure communication
08Key distribution
CPC
H04B 10/2507
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
10Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
25Arrangements specific to fibre transmission
2507for the reduction or elimination of distortion or dispersion
H04B 10/2513
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
10Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
25Arrangements specific to fibre transmission
2507for the reduction or elimination of distortion or dispersion
2513due to chromatic dispersion
H04B 10/70
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
10Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
70Photonic quantum communication
H04L 9/0852
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
9Cryptographic mechanisms or cryptographic; arrangements for secret or secure communication
08Key distribution ; or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
0816Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
0852Quantum cryptography
Applicants
  • CORNING INCORPORATED [US]/[US]
Inventors
  • LI, Ming-Jun
  • NOLAN, Daniel Aloysius
Agents
  • SHORT, Svetlana Z.
Priority Data
62/771,71127.11.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) QUANTUM KEY DISTRIBUTION SYSTEMS HAVING LOW LOSS DISPERSION LIMITING FIBERS
(FR) SYSTÈMES DE DISTRIBUTION DE CLÉS QUANTIQUES AYANT DES FIBRES LIMITANT LA DISPERSION À FAIBLE PERTE
Abstract
(EN)
A quantum communications system includes a quantum key generation system having a photonic quantum bit generator, a low loss dispersion limiting fiber having a length L, for example greater than 200 km, and a photon detector unit and a communications network having a signal generator, a signal channel, and a signal receiver. The low loss dispersion limiting fiber extends between and optically couples the photonic quantum bit generator and the photon detector unit. Further, the low loss dispersion limiting fiber is structurally configured to limit dispersion at an absolute dispersion rate of about 9 ps/(nm)km or less, and preferably 0.5 ps/(nm)km or less, and induce attenuation at an attenuation rate of about 0.175 dB/km or less such that the quantum key bit information of a plurality of photons output by the one or more photonic quantum bit generators is receivable at the photon detector unit at a bit rate of at least 10 Gbit/sec.
(FR)
Un système de communication quantique comprend un système de génération de clés quantiques ayant un générateur de bits quantiques photoniques, une fibre limitant la dispersion à faible perte ayant une longueur L, par exemple supérieure à 200 km, et une unité de détection de photons et un réseau de communications ayant un générateur de signal, un canal de signal et un récepteur de signal. La fibre limitant la dispersion à faible perte s'étend entre le générateur de bits quantiques photoniques et l'unité de détecteur de photons et couple optiquement ces derniers. En outre, la fibre limitant la dispersion à faible perte est structuralement conçue pour limiter une dispersion à un taux de dispersion absolu d'environ 9 ps/(nm)km ou moins, et de préférence 0,5 ps/(nm)km ou moins, et induire une atténuation à un taux d'atténuation d'environ 0,175 dB/km ou moins, de telle sorte que les informations de bit de clé quantique d'une pluralité de photons émis par le ou les générateurs de bits quantiques photoniques peuvent être reçues au niveau de l'unité de détecteur de photons à un débit binaire d'au moins environ 10 Gbit/sec.
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