Homodyne-based quantum random number generator at 2.9 Gbps secure against quantum side-information

Tobias Gehring; Cosmo Lupo; Arne Kordts; Dino Solar Nikolic; Nitin Jain; Tobias Rydberg; Thomas B. Pedersen; Stefano Pirandola; Ulrik L. Andersen

doi:10.1038/s41467-020-20813-w

Homodyne-based quantum random number generator at 2.9 Gbps secure against quantum side-information

Tobias Gehring, Cosmo Lupo, Arne Kordts, Dino Solar Nikolic, Nitin Jain, Tobias Rydberg, Thomas B. Pedersen, Stefano Pirandola, Ulrik L. Andersen

Computer Science

Research output: Contribution to journal › Article › peer-review

Abstract

Quantum random number generators promise perfectly unpredictable random numbers. A popular approach to quantum random number generation is homodyne measurements of the vacuum state, the ground state of the electro-magnetic field. Here we experimentally implement such a quantum random number generator, and derive a security proof that considers quantum side-information instead of classical side-information only. Based on the assumptions of Gaussianity and stationarity of noise processes, our security analysis furthermore includes correlations between consecutive measurement outcomes due to finite detection bandwidth, as well as analog-to-digital converter imperfections. We characterize our experimental realization by bounding measured parameters of the stochastic model determining the min-entropy of the system’s measurement outcomes, and we demonstrate a real-time generation rate of 2.9 Gbit/s. Our generator follows a trusted, device-dependent, approach. By treating side-information quantum mechanically an important restriction on adversaries is removed, which previously was reserved to semi-device-independent and device-independent schemes.

Original language	English
Article number	605
Journal	Nature Communications
Volume	12
DOIs	https://doi.org/10.1038/s41467-020-20813-w
Publication status	Published - 27 Jan 2021

Bibliographical note

Keywords

quant-ph

Access to Document

10.1038/s41467-020-20813-wLicence: CC BY

1812.05377v3
© The Author(s) 2021
Accepted author manuscript, 911 KB
s41467-020-20813-w
© The Author(s) 2021
Final published version, 1.39 MBLicence: CC BY

Cite this

@article{0abfe9fb6c3740a4b524385ce3245665,

title = "Homodyne-based quantum random number generator at 2.9 Gbps secure against quantum side-information",

abstract = "Quantum random number generators promise perfectly unpredictable random numbers. A popular approach to quantum random number generation is homodyne measurements of the vacuum state, the ground state of the electro-magnetic field. Here we experimentally implement such a quantum random number generator, and derive a security proof that considers quantum side-information instead of classical side-information only. Based on the assumptions of Gaussianity and stationarity of noise processes, our security analysis furthermore includes correlations between consecutive measurement outcomes due to finite detection bandwidth, as well as analog-to-digital converter imperfections. We characterize our experimental realization by bounding measured parameters of the stochastic model determining the min-entropy of the system{\textquoteright}s measurement outcomes, and we demonstrate a real-time generation rate of 2.9 Gbit/s. Our generator follows a trusted, device-dependent, approach. By treating side-information quantum mechanically an important restriction on adversaries is removed, which previously was reserved to semi-device-independent and device-independent schemes.",

keywords = "quant-ph",

author = "Tobias Gehring and Cosmo Lupo and Arne Kordts and Nikolic, {Dino Solar} and Nitin Jain and Tobias Rydberg and Pedersen, {Thomas B.} and Stefano Pirandola and Andersen, {Ulrik L.}",

note = "{\textcopyright} The Author(s) 2021",

year = "2021",

month = jan,

day = "27",

doi = "10.1038/s41467-020-20813-w",

language = "English",

volume = "12",

journal = "Nature Communications",

issn = "2041-1723",

publisher = "Nature Publishing Group",

}

TY - JOUR

T1 - Homodyne-based quantum random number generator at 2.9 Gbps secure against quantum side-information

AU - Gehring, Tobias

AU - Lupo, Cosmo

AU - Kordts, Arne

AU - Nikolic, Dino Solar

AU - Jain, Nitin

AU - Rydberg, Tobias

AU - Pedersen, Thomas B.

AU - Pirandola, Stefano

AU - Andersen, Ulrik L.

PY - 2021/1/27

Y1 - 2021/1/27

N2 - Quantum random number generators promise perfectly unpredictable random numbers. A popular approach to quantum random number generation is homodyne measurements of the vacuum state, the ground state of the electro-magnetic field. Here we experimentally implement such a quantum random number generator, and derive a security proof that considers quantum side-information instead of classical side-information only. Based on the assumptions of Gaussianity and stationarity of noise processes, our security analysis furthermore includes correlations between consecutive measurement outcomes due to finite detection bandwidth, as well as analog-to-digital converter imperfections. We characterize our experimental realization by bounding measured parameters of the stochastic model determining the min-entropy of the system’s measurement outcomes, and we demonstrate a real-time generation rate of 2.9 Gbit/s. Our generator follows a trusted, device-dependent, approach. By treating side-information quantum mechanically an important restriction on adversaries is removed, which previously was reserved to semi-device-independent and device-independent schemes.

AB - Quantum random number generators promise perfectly unpredictable random numbers. A popular approach to quantum random number generation is homodyne measurements of the vacuum state, the ground state of the electro-magnetic field. Here we experimentally implement such a quantum random number generator, and derive a security proof that considers quantum side-information instead of classical side-information only. Based on the assumptions of Gaussianity and stationarity of noise processes, our security analysis furthermore includes correlations between consecutive measurement outcomes due to finite detection bandwidth, as well as analog-to-digital converter imperfections. We characterize our experimental realization by bounding measured parameters of the stochastic model determining the min-entropy of the system’s measurement outcomes, and we demonstrate a real-time generation rate of 2.9 Gbit/s. Our generator follows a trusted, device-dependent, approach. By treating side-information quantum mechanically an important restriction on adversaries is removed, which previously was reserved to semi-device-independent and device-independent schemes.

KW - quant-ph

U2 - 10.1038/s41467-020-20813-w

DO - 10.1038/s41467-020-20813-w

M3 - Article

SN - 2041-1723

VL - 12

JO - Nature Communications

JF - Nature Communications

M1 - 605

ER -