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Cryptography in coherent optical information networks using dissipative metamaterial gates

Cryptography in coherent optical information networks using dissipative metamaterial gates
Cryptography in coherent optical information networks using dissipative metamaterial gates
All-optical encryption of information in fibre telecommunication networks offers lower complexity and far higher data rates than electronic encryption can deliver. However, existing optical layer encryption methods, that are compatible with keys of unlimited length, are based on nonlinear processes that require intense optical fields. Here, we introduce an optical layer secure communication protocol that does not rely on nonlinear optical processes but instead uses energy redistribution of coherent optical waves interacting on a plasmonic metamaterial absorber. We implement the protocol in a telecommunication optical fibre information network, where signal and key distribution lines use a common coherent information carrier. We investigate and demonstrate different encryption modes, including a scheme providing perfect secrecy. All-optical cryptography as demonstrated here exploits signal processing mechanisms that can satisfy optical telecom data rate requirements in any current or next-generation frequency band with bandwidth exceeding 100 THz and switching energy of a few photons per bit. This is the first demonstration of an optical telecommunications application of metamaterial technology.
cryptography, coherent absorption, coherent transmission, metamaterial, metadevice, coherent absorber
2378-0967
1-8
Xomalis, Angelos
4592aa40-b960-4c66-8816-5dd320228804
Demirtzioglou, Iosif
5f46eb43-a2cd-4c87-94e0-f100e43f9431
Jung, Yongmin
6685e51e-be47-4c96-8c4b-65aee3b5126d
Plum, Eric
50761a26-2982-40df-9153-7aecc4226eb5
Lacava, Cosimo
a0a31a27-23ac-4a73-8bb4-2f02368fb8bd
Petropoulos, Periklis
522b02cc-9f3f-468e-bca5-e9f58cc9cad7
Richardson, David
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Zheludev, Nikolai
32fb6af7-97e4-4d11-bca6-805745e40cc6
Xomalis, Angelos
4592aa40-b960-4c66-8816-5dd320228804
Demirtzioglou, Iosif
5f46eb43-a2cd-4c87-94e0-f100e43f9431
Jung, Yongmin
6685e51e-be47-4c96-8c4b-65aee3b5126d
Plum, Eric
50761a26-2982-40df-9153-7aecc4226eb5
Lacava, Cosimo
a0a31a27-23ac-4a73-8bb4-2f02368fb8bd
Petropoulos, Periklis
522b02cc-9f3f-468e-bca5-e9f58cc9cad7
Richardson, David
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Zheludev, Nikolai
32fb6af7-97e4-4d11-bca6-805745e40cc6

Xomalis, Angelos, Demirtzioglou, Iosif, Jung, Yongmin, Plum, Eric, Lacava, Cosimo, Petropoulos, Periklis, Richardson, David and Zheludev, Nikolai (2019) Cryptography in coherent optical information networks using dissipative metamaterial gates. APL Photonics, 4, 1-8. (doi:10.1063/1.5092216).

Record type: Article

Abstract

All-optical encryption of information in fibre telecommunication networks offers lower complexity and far higher data rates than electronic encryption can deliver. However, existing optical layer encryption methods, that are compatible with keys of unlimited length, are based on nonlinear processes that require intense optical fields. Here, we introduce an optical layer secure communication protocol that does not rely on nonlinear optical processes but instead uses energy redistribution of coherent optical waves interacting on a plasmonic metamaterial absorber. We implement the protocol in a telecommunication optical fibre information network, where signal and key distribution lines use a common coherent information carrier. We investigate and demonstrate different encryption modes, including a scheme providing perfect secrecy. All-optical cryptography as demonstrated here exploits signal processing mechanisms that can satisfy optical telecom data rate requirements in any current or next-generation frequency band with bandwidth exceeding 100 THz and switching energy of a few photons per bit. This is the first demonstration of an optical telecommunications application of metamaterial technology.

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More information

Accepted/In Press date: 6 April 2019
e-pub ahead of print date: 24 April 2019
Published date: April 2019
Keywords: cryptography, coherent absorption, coherent transmission, metamaterial, metadevice, coherent absorber

Identifiers

Local EPrints ID: 430199
URI: https://eprints.soton.ac.uk/id/eprint/430199
ISSN: 2378-0967
PURE UUID: 6b3b1535-8173-4f65-9877-b80d6dd0a5b0
ORCID for Eric Plum: ORCID iD orcid.org/0000-0002-1552-1840
ORCID for Cosimo Lacava: ORCID iD orcid.org/0000-0002-9950-8642
ORCID for Periklis Petropoulos: ORCID iD orcid.org/0000-0002-1576-8034
ORCID for David Richardson: ORCID iD orcid.org/0000-0002-7751-1058
ORCID for Nikolai Zheludev: ORCID iD orcid.org/0000-0002-1013-6636

Catalogue record

Date deposited: 16 Apr 2019 16:30
Last modified: 20 Jul 2019 01:24

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