Upper Bounds on Device-Independent Quantum Key Distribution

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Standard

Upper Bounds on Device-Independent Quantum Key Distribution. / Christandl, Matthias; Ferrara, Roberto; Horodecki, Karol.

In: Physical Review Letters, Vol. 126, No. 16, 160501 , 2021.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Christandl, M, Ferrara, R & Horodecki, K 2021, 'Upper Bounds on Device-Independent Quantum Key Distribution', Physical Review Letters, vol. 126, no. 16, 160501 . https://doi.org/10.1103/PhysRevLett.126.160501

APA

Christandl, M., Ferrara, R., & Horodecki, K. (2021). Upper Bounds on Device-Independent Quantum Key Distribution. Physical Review Letters, 126(16), [160501 ]. https://doi.org/10.1103/PhysRevLett.126.160501

Vancouver

Christandl M, Ferrara R, Horodecki K. Upper Bounds on Device-Independent Quantum Key Distribution. Physical Review Letters. 2021;126(16). 160501 . https://doi.org/10.1103/PhysRevLett.126.160501

Author

Christandl, Matthias ; Ferrara, Roberto ; Horodecki, Karol. / Upper Bounds on Device-Independent Quantum Key Distribution. In: Physical Review Letters. 2021 ; Vol. 126, No. 16.

Bibtex

@article{e38e02ad830b48f489ec1fea88b7f418,
title = "Upper Bounds on Device-Independent Quantum Key Distribution",
abstract = "Quantum key distribution (QKD) is a method that distributes a secret key to a sender and a receiver by the transmission of quantum particles (e.g., photons). Device-independent quantum key distribution (DIQKD) is a version of QKD with a stronger notion of security, in that the sender and receiver base their protocol only on the statistics of input and outputs of their devices as inspired by Bell{\textquoteright}s theorem. We study the rate at which DIQKD can be carried out for a given bipartite quantum state distributed between the sender and receiver or a quantum channel connecting them. We provide upper bounds on the achievable rate going beyond upper bounds possible for QKD. In particular, we construct states and channels where the QKD rate is significant while the DIQKD rate is negligible. This gap is illustrated for a practical case arising when using standard postprocessing techniques for entangled two-qubit states.",
author = "Matthias Christandl and Roberto Ferrara and Karol Horodecki",
year = "2021",
doi = "10.1103/PhysRevLett.126.160501",
language = "English",
volume = "126",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "16",

}

RIS

TY - JOUR

T1 - Upper Bounds on Device-Independent Quantum Key Distribution

AU - Christandl, Matthias

AU - Ferrara, Roberto

AU - Horodecki, Karol

PY - 2021

Y1 - 2021

N2 - Quantum key distribution (QKD) is a method that distributes a secret key to a sender and a receiver by the transmission of quantum particles (e.g., photons). Device-independent quantum key distribution (DIQKD) is a version of QKD with a stronger notion of security, in that the sender and receiver base their protocol only on the statistics of input and outputs of their devices as inspired by Bell’s theorem. We study the rate at which DIQKD can be carried out for a given bipartite quantum state distributed between the sender and receiver or a quantum channel connecting them. We provide upper bounds on the achievable rate going beyond upper bounds possible for QKD. In particular, we construct states and channels where the QKD rate is significant while the DIQKD rate is negligible. This gap is illustrated for a practical case arising when using standard postprocessing techniques for entangled two-qubit states.

AB - Quantum key distribution (QKD) is a method that distributes a secret key to a sender and a receiver by the transmission of quantum particles (e.g., photons). Device-independent quantum key distribution (DIQKD) is a version of QKD with a stronger notion of security, in that the sender and receiver base their protocol only on the statistics of input and outputs of their devices as inspired by Bell’s theorem. We study the rate at which DIQKD can be carried out for a given bipartite quantum state distributed between the sender and receiver or a quantum channel connecting them. We provide upper bounds on the achievable rate going beyond upper bounds possible for QKD. In particular, we construct states and channels where the QKD rate is significant while the DIQKD rate is negligible. This gap is illustrated for a practical case arising when using standard postprocessing techniques for entangled two-qubit states.

U2 - 10.1103/PhysRevLett.126.160501

DO - 10.1103/PhysRevLett.126.160501

M3 - Journal article

C2 - 33961475

VL - 126

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 16

M1 - 160501

ER -

ID: 260348053