Experimental implementation of secure anonymous protocols on an eight-user quantum key distribution network

Zixin Huang; Siddarth Koduru Joshi; Djeylan Aktas; Cosmo Lupo; Armanda O. Quintavalle; Natarajan Venkatachalam; Sören Wengerowsky; Martin Lončarić; Sebastian Philipp Neumann; Bo Liu; Željko Samec; Laurent Kling; Mario Stipčević; Rupert Ursin; John G. Rarity

doi:10.1038/s41534-022-00535-1

Experimental implementation of secure anonymous protocols on an eight-user quantum key distribution network

Zixin Huang^*
, Siddarth Koduru Joshi^*
, Djeylan Aktas
, Cosmo Lupo
, Armanda O. Quintavalle
, Natarajan Venkatachalam
, Sören Wengerowsky
, Martin Lončarić
, Sebastian Philipp Neumann
, Bo Liu
, Željko Samec
, Laurent Kling
, Mario Stipčević
, Rupert Ursin
, John G. Rarity

^*Corresponding author for this work

Research output: Contribution to journal › Article (Academic Journal) › peer-review

35 Citations (Scopus)

Abstract

Anonymity in networked communication is vital for many privacy-preserving tasks. Secure key distribution alone is insufficient for high-security communications. Often, knowing who transmits a message to whom and when must also be kept hidden from an adversary. Here, we experimentally demonstrate five information-theoretically secure anonymity protocols on an eight user city-wide quantum network using polarisation entangled photon pairs. At the heart of these protocols is anonymous broadcasting, which is a cryptographic primitive that allows one user to reveal one bit of information while keeping their identity anonymous. For a network of n users, the protocols retain anonymity for the sender, given that no more than n − 2 users are colluding. This is an implementation of genuine multi-user cryptographic protocols beyond standard QKD. Our anonymous protocols enhance the functionality of any fully-connected Quantum Key Distribution network without trusted nodes.

Original language	English
Article number	25
Journal	npj Quantum Information
Volume	8
Issue number	1
DOIs	https://doi.org/10.1038/s41534-022-00535-1
Publication status	Published - 7 Mar 2022

Bibliographical note

Publisher Copyright:
© 2022, The Author(s).

Research Groups and Themes

QETLabs

Keywords

quant-ph
cs.CR
cs.ET

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Huang, Z., Joshi, S. K., Aktas, D., Lupo, C., Quintavalle, A. O., Venkatachalam, N., Wengerowsky, S., Lončarić, M., Neumann, S. P., Liu, B., Samec, Ž., Kling, L., Stipčević, M., Ursin, R., & Rarity, J. G. (2022). Experimental implementation of secure anonymous protocols on an eight-user quantum key distribution network. npj Quantum Information, 8(1), Article 25. https://doi.org/10.1038/s41534-022-00535-1

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title = "Experimental implementation of secure anonymous protocols on an eight-user quantum key distribution network",

abstract = "Anonymity in networked communication is vital for many privacy-preserving tasks. Secure key distribution alone is insufficient for high-security communications. Often, knowing who transmits a message to whom and when must also be kept hidden from an adversary. Here, we experimentally demonstrate five information-theoretically secure anonymity protocols on an eight user city-wide quantum network using polarisation entangled photon pairs. At the heart of these protocols is anonymous broadcasting, which is a cryptographic primitive that allows one user to reveal one bit of information while keeping their identity anonymous. For a network of n users, the protocols retain anonymity for the sender, given that no more than n − 2 users are colluding. This is an implementation of genuine multi-user cryptographic protocols beyond standard QKD. Our anonymous protocols enhance the functionality of any fully-connected Quantum Key Distribution network without trusted nodes.",

keywords = "quant-ph, cs.CR, cs.ET",

author = "Zixin Huang and Joshi, \{Siddarth Koduru\} and Djeylan Aktas and Cosmo Lupo and Quintavalle, \{Armanda O.\} and Natarajan Venkatachalam and S{\"o}ren Wengerowsky and Martin Lon{\v c}ari{\'c} and Neumann, \{Sebastian Philipp\} and Bo Liu and {\v Z}eljko Samec and Laurent Kling and Mario Stip{\v c}evi{\'c} and Rupert Ursin and Rarity, \{John G.\}",

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year = "2022",

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day = "7",

doi = "10.1038/s41534-022-00535-1",

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Huang, Z, Joshi, SK, Aktas, D, Lupo, C, Quintavalle, AO, Venkatachalam, N, Wengerowsky, S, Lončarić, M, Neumann, SP, Liu, B, Samec, Ž, Kling, L, Stipčević, M, Ursin, R & Rarity, JG 2022, 'Experimental implementation of secure anonymous protocols on an eight-user quantum key distribution network', npj Quantum Information, vol. 8, no. 1, 25. https://doi.org/10.1038/s41534-022-00535-1

TY - JOUR

T1 - Experimental implementation of secure anonymous protocols on an eight-user quantum key distribution network

AU - Huang, Zixin

AU - Joshi, Siddarth Koduru

AU - Aktas, Djeylan

AU - Lupo, Cosmo

AU - Quintavalle, Armanda O.

AU - Venkatachalam, Natarajan

AU - Wengerowsky, Sören

AU - Lončarić, Martin

AU - Neumann, Sebastian Philipp

AU - Liu, Bo

AU - Samec, Željko

AU - Kling, Laurent

AU - Stipčević, Mario

AU - Ursin, Rupert

AU - Rarity, John G.

PY - 2022/3/7

Y1 - 2022/3/7

N2 - Anonymity in networked communication is vital for many privacy-preserving tasks. Secure key distribution alone is insufficient for high-security communications. Often, knowing who transmits a message to whom and when must also be kept hidden from an adversary. Here, we experimentally demonstrate five information-theoretically secure anonymity protocols on an eight user city-wide quantum network using polarisation entangled photon pairs. At the heart of these protocols is anonymous broadcasting, which is a cryptographic primitive that allows one user to reveal one bit of information while keeping their identity anonymous. For a network of n users, the protocols retain anonymity for the sender, given that no more than n − 2 users are colluding. This is an implementation of genuine multi-user cryptographic protocols beyond standard QKD. Our anonymous protocols enhance the functionality of any fully-connected Quantum Key Distribution network without trusted nodes.

AB - Anonymity in networked communication is vital for many privacy-preserving tasks. Secure key distribution alone is insufficient for high-security communications. Often, knowing who transmits a message to whom and when must also be kept hidden from an adversary. Here, we experimentally demonstrate five information-theoretically secure anonymity protocols on an eight user city-wide quantum network using polarisation entangled photon pairs. At the heart of these protocols is anonymous broadcasting, which is a cryptographic primitive that allows one user to reveal one bit of information while keeping their identity anonymous. For a network of n users, the protocols retain anonymity for the sender, given that no more than n − 2 users are colluding. This is an implementation of genuine multi-user cryptographic protocols beyond standard QKD. Our anonymous protocols enhance the functionality of any fully-connected Quantum Key Distribution network without trusted nodes.

KW - quant-ph

KW - cs.CR

KW - cs.ET

UR - https://www.scopus.com/pages/publications/85126210563

UR - https://doi.org/10.48550/arXiv.2011.09480

U2 - 10.1038/s41534-022-00535-1

DO - 10.1038/s41534-022-00535-1

M3 - Article (Academic Journal)

AN - SCOPUS:85126210563

SN - 2056-6387

VL - 8

JO - npj Quantum Information

JF - npj Quantum Information

IS - 1

M1 - 25

ER -

Experimental implementation of secure anonymous protocols on an eight-user quantum key distribution network

Abstract

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QuPIC: Quantum Technology Capital: Quantum Photonic Integrated Circuits

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Experimental implementation of secure anonymous protocols on an eight-user quantum key distribution network

Abstract

Bibliographical note

Research Groups and Themes

Keywords

Access to Document

Handle.net

Other files and links

Fingerprint

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QuPIC: Quantum Technology Capital: Quantum Photonic Integrated Circuits

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