A trusted-node-free eight-user metropolitan quantum communication network

Siddarth Koduru Joshi; Djeylan Aktas; Sören Wengerowsky; Martin Lončarić; Sebastian Philipp Neumann; Bo Liu; Thomas Scheidl; Guillermo Currás Lorenzo; Željko Samec; Laurent Kling; Alex Qiu; Mohsen Razavi; Mario Stipčević; John G. Rarity; Rupert Ursin

doi:10.1126/sciadv.aba0959

A trusted-node-free eight-user metropolitan quantum communication network

Siddarth Koduru Joshi^*, Djeylan Aktas, Sören Wengerowsky, Martin Lončarić, Sebastian Philipp Neumann, Bo Liu, Thomas Scheidl, Guillermo Currás Lorenzo, Željko Samec, Laurent Kling, Alex Qiu, Mohsen Razavi, Mario Stipčević, John G. Rarity, Rupert Ursin

^*Corresponding author for this work

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

274 Citations (Scopus)

Abstract

Quantum communication is rapidly gaining popularity due to its high security and technological maturity. However, most implementations are limited to just two communicating parties (users). Quantum communication networks aim to connect a multitude of users. Here we present a fully connected quantum communication network on a city wide scale without active switching or trusted nodes. We demonstrate simultaneous and secure connections between all 28 pairings of 8 users. Our novel network topology is easily scalable to many users, allows traffic management features and minimises the infrastructure as well as the user hardware needed.

Original language	English
Article number	eaba0959
Number of pages	8
Journal	Science Advances
Volume	6
Issue number	36
DOIs	https://doi.org/10.1126/sciadv.aba0959
Publication status	Published - 2 Sept 2020

Research Groups and Themes

Bristol Quantum Information Institute
QETLabs
Photonics and Quantum

Keywords

quant-ph

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title = "A trusted-node-free eight-user metropolitan quantum communication network",

abstract = " Quantum communication is rapidly gaining popularity due to its high security and technological maturity. However, most implementations are limited to just two communicating parties (users). Quantum communication networks aim to connect a multitude of users. Here we present a fully connected quantum communication network on a city wide scale without active switching or trusted nodes. We demonstrate simultaneous and secure connections between all 28 pairings of 8 users. Our novel network topology is easily scalable to many users, allows traffic management features and minimises the infrastructure as well as the user hardware needed. ",

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doi = "10.1126/sciadv.aba0959",

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T1 - A trusted-node-free eight-user metropolitan quantum communication network

AU - Joshi, Siddarth Koduru

AU - Aktas, Djeylan

AU - Wengerowsky, Sören

AU - Lončarić, Martin

AU - Neumann, Sebastian Philipp

AU - Liu, Bo

AU - Scheidl, Thomas

AU - Lorenzo, Guillermo Currás

AU - Samec, Željko

AU - Kling, Laurent

AU - Qiu, Alex

AU - Razavi, Mohsen

AU - Stipčević, Mario

AU - Rarity, John G.

AU - Ursin, Rupert

PY - 2020/9/2

Y1 - 2020/9/2

N2 - Quantum communication is rapidly gaining popularity due to its high security and technological maturity. However, most implementations are limited to just two communicating parties (users). Quantum communication networks aim to connect a multitude of users. Here we present a fully connected quantum communication network on a city wide scale without active switching or trusted nodes. We demonstrate simultaneous and secure connections between all 28 pairings of 8 users. Our novel network topology is easily scalable to many users, allows traffic management features and minimises the infrastructure as well as the user hardware needed.

AB - Quantum communication is rapidly gaining popularity due to its high security and technological maturity. However, most implementations are limited to just two communicating parties (users). Quantum communication networks aim to connect a multitude of users. Here we present a fully connected quantum communication network on a city wide scale without active switching or trusted nodes. We demonstrate simultaneous and secure connections between all 28 pairings of 8 users. Our novel network topology is easily scalable to many users, allows traffic management features and minimises the infrastructure as well as the user hardware needed.

KW - quant-ph

UR - https://arxiv.org/abs/1907.08229

U2 - 10.1126/sciadv.aba0959

DO - 10.1126/sciadv.aba0959

M3 - Article (Academic Journal)

C2 - 32917585

SN - 2375-2548

VL - 6

JO - Science Advances

JF - Science Advances

IS - 36

M1 - eaba0959

ER -

A trusted-node-free eight-user metropolitan quantum communication network

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