Self-testing quantum random number generator.
The generation of random numbers is a task of paramount importance in modern science. A central problem for both classical and quantum randomness generation is to estimate the entropy of the data generated by a given device. Here we present a protocol for self-testing quantum random number generation, in which the user can monitor the entropy in real time. Based on a few general assumptions, our protocol guarantees continuous generation of high quality randomness, without the need for a detailed characterization of the devices. Using a fully optical setup, we implement our protocol and illustrate its self-testing capacity. Our work thus provides a practical approach to quantum randomness generation in a scenario of trusted but error-prone devices.
Group of Applied Physics, Université de Genève, 1211 Genève, Switzerland.
Tommaso
T
Lunghi
Département de Physique Théorique, Université de Genève, 1211 Genève, Switzerland.
Jonatan Bohr
JB
Brask
Group of Applied Physics, Université de Genève, 1211 Genève, Switzerland.
Charles Ci Wen
CC
Lim
Group of Applied Physics, Université de Genève, 1211 Genève, Switzerland.
Quentin
Q
Lavigne
Département de Physique Théorique, Université de Genève, 1211 Genève, Switzerland.
Joseph
J
Bowles
Group of Applied Physics, Université de Genève, 1211 Genève, Switzerland.
Anthony
A
Martin
Group of Applied Physics, Université de Genève, 1211 Genève, Switzerland.
Hugo
H
Zbinden
Département de Physique Théorique, Université de Genève, 1211 Genève, Switzerland.
Nicolas
N
Brunner