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Agile and versatile quantum communication: signatures and secrets

Research output: Contribution to journalArticlepeer-review

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Agile and versatile quantum communication : signatures and secrets. / Richter, S.; Thornton, M.; Khan, I.; Scott, H.; Jaksch, K.; Vogl, U.; Stiller, B.; Leuchs, G.; Marquardt, C.; Korolkova, N.

In: Physical Review X, Vol. 11, No. 1, 011038, 24.02.2021.

Research output: Contribution to journalArticlepeer-review

Harvard

Richter, S, Thornton, M, Khan, I, Scott, H, Jaksch, K, Vogl, U, Stiller, B, Leuchs, G, Marquardt, C & Korolkova, N 2021, 'Agile and versatile quantum communication: signatures and secrets', Physical Review X, vol. 11, no. 1, 011038. https://doi.org/10.1103/PhysRevX.11.011038

APA

Richter, S., Thornton, M., Khan, I., Scott, H., Jaksch, K., Vogl, U., Stiller, B., Leuchs, G., Marquardt, C., & Korolkova, N. (2021). Agile and versatile quantum communication: signatures and secrets. Physical Review X, 11(1), [011038]. https://doi.org/10.1103/PhysRevX.11.011038

Vancouver

Richter S, Thornton M, Khan I, Scott H, Jaksch K, Vogl U et al. Agile and versatile quantum communication: signatures and secrets. Physical Review X. 2021 Feb 24;11(1). 011038. https://doi.org/10.1103/PhysRevX.11.011038

Author

Richter, S. ; Thornton, M. ; Khan, I. ; Scott, H. ; Jaksch, K. ; Vogl, U. ; Stiller, B. ; Leuchs, G. ; Marquardt, C. ; Korolkova, N. / Agile and versatile quantum communication : signatures and secrets. In: Physical Review X. 2021 ; Vol. 11, No. 1.

Bibtex - Download

@article{e7af79711b194005a22da6922ab3d30d,
title = "Agile and versatile quantum communication: signatures and secrets",
abstract = "Agile cryptography allows for a resource-efficient swap of a cryptographic core in case the security of an underlying classical cryptographic algorithm becomes compromised. Conversely, versatile cryptography allows the user to switch the cryptographic task without requiring any knowledge of its inner workings. In this paper, we suggest how these related principles can be applied to the field of quantum cryptography by explicitly demonstrating two quantum cryptographic protocols, quantum digital signatures (QDS) and quantum secret sharing (QSS), on the same hardware sender and receiver platform. Crucially, the protocols differ only in their classical postprocessing. The system is also suitable for quantum key distribution (QKD) and is highly compatible with deployed telecommunication infrastructures, since it uses standard quadrature phase-shift keying encoding and heterodyne detection. For the first time, QDS protocols are modified to allow for postselection at the receiver, enhancing protocol performance. The cryptographic primitives QDS and QSS are inherently multipartite, and we prove that they are secure not only when a player internal to the task is dishonest, but also when (external) eavesdropping on the quantum channel is allowed. In our first proof-of-principle demonstration of an agile and versatile quantum communication system, the quantum states are distributed at GHz rates. A 1-bit message may be securely signed using our QDS protocols in less than 0.05 ms over a 2-km fiber link and in less than 0.2 s over a 20-km fiber link. To our knowledge, this also marks the first demonstration of a continuous-variable direct QSS protocol. {\textcopyright} 2021 authors.",
author = "S. Richter and M. Thornton and I. Khan and H. Scott and K. Jaksch and U. Vogl and B. Stiller and G. Leuchs and C. Marquardt and N. Korolkova",
note = "This research receives funding from the European Union{\textquoteright}s Horizon 2020 research and innovation program under Grant Agreement No. 820466 (CiViQ). This research is also funded by the German Federal Ministry of Education and Research within the project Hardware-based Quantum Security. The authors gratefully acknowledge the support from the Scottish Universities Physics Alliance and the Engineering and Physical Sciences Research Council. This project was supported within the framework of the International Max Planck Partnership with Scottish Universities.",
year = "2021",
month = feb,
day = "24",
doi = "10.1103/PhysRevX.11.011038",
language = "English",
volume = "11",
journal = "Physical Review X",
issn = "2160-3308",
publisher = "American Physical Society",
number = "1",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Agile and versatile quantum communication

T2 - signatures and secrets

AU - Richter, S.

AU - Thornton, M.

AU - Khan, I.

AU - Scott, H.

AU - Jaksch, K.

AU - Vogl, U.

AU - Stiller, B.

AU - Leuchs, G.

AU - Marquardt, C.

AU - Korolkova, N.

N1 - This research receives funding from the European Union’s Horizon 2020 research and innovation program under Grant Agreement No. 820466 (CiViQ). This research is also funded by the German Federal Ministry of Education and Research within the project Hardware-based Quantum Security. The authors gratefully acknowledge the support from the Scottish Universities Physics Alliance and the Engineering and Physical Sciences Research Council. This project was supported within the framework of the International Max Planck Partnership with Scottish Universities.

PY - 2021/2/24

Y1 - 2021/2/24

N2 - Agile cryptography allows for a resource-efficient swap of a cryptographic core in case the security of an underlying classical cryptographic algorithm becomes compromised. Conversely, versatile cryptography allows the user to switch the cryptographic task without requiring any knowledge of its inner workings. In this paper, we suggest how these related principles can be applied to the field of quantum cryptography by explicitly demonstrating two quantum cryptographic protocols, quantum digital signatures (QDS) and quantum secret sharing (QSS), on the same hardware sender and receiver platform. Crucially, the protocols differ only in their classical postprocessing. The system is also suitable for quantum key distribution (QKD) and is highly compatible with deployed telecommunication infrastructures, since it uses standard quadrature phase-shift keying encoding and heterodyne detection. For the first time, QDS protocols are modified to allow for postselection at the receiver, enhancing protocol performance. The cryptographic primitives QDS and QSS are inherently multipartite, and we prove that they are secure not only when a player internal to the task is dishonest, but also when (external) eavesdropping on the quantum channel is allowed. In our first proof-of-principle demonstration of an agile and versatile quantum communication system, the quantum states are distributed at GHz rates. A 1-bit message may be securely signed using our QDS protocols in less than 0.05 ms over a 2-km fiber link and in less than 0.2 s over a 20-km fiber link. To our knowledge, this also marks the first demonstration of a continuous-variable direct QSS protocol. © 2021 authors.

AB - Agile cryptography allows for a resource-efficient swap of a cryptographic core in case the security of an underlying classical cryptographic algorithm becomes compromised. Conversely, versatile cryptography allows the user to switch the cryptographic task without requiring any knowledge of its inner workings. In this paper, we suggest how these related principles can be applied to the field of quantum cryptography by explicitly demonstrating two quantum cryptographic protocols, quantum digital signatures (QDS) and quantum secret sharing (QSS), on the same hardware sender and receiver platform. Crucially, the protocols differ only in their classical postprocessing. The system is also suitable for quantum key distribution (QKD) and is highly compatible with deployed telecommunication infrastructures, since it uses standard quadrature phase-shift keying encoding and heterodyne detection. For the first time, QDS protocols are modified to allow for postselection at the receiver, enhancing protocol performance. The cryptographic primitives QDS and QSS are inherently multipartite, and we prove that they are secure not only when a player internal to the task is dishonest, but also when (external) eavesdropping on the quantum channel is allowed. In our first proof-of-principle demonstration of an agile and versatile quantum communication system, the quantum states are distributed at GHz rates. A 1-bit message may be securely signed using our QDS protocols in less than 0.05 ms over a 2-km fiber link and in less than 0.2 s over a 20-km fiber link. To our knowledge, this also marks the first demonstration of a continuous-variable direct QSS protocol. © 2021 authors.

U2 - 10.1103/PhysRevX.11.011038

DO - 10.1103/PhysRevX.11.011038

M3 - Article

VL - 11

JO - Physical Review X

JF - Physical Review X

SN - 2160-3308

IS - 1

M1 - 011038

ER -

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