https://doi.org/10.1140/epjqt/s40507-026-00501-2
Research
Modulator-free, self-testing quantum random number generator
1
Vigo Quantum Communication Center, University of Vigo, E-36310, Vigo, Spain
2
Escuela de Ingeniería de Telecomunicación, Department of Signal Theory and Communications, University of Vigo, E-36310, Vigo, Spain
3
AtlanTTic Research Center, University of Vigo, E-36310, Vigo, Spain
4
Department of Applied Physics, Université de Genève, Quantum Technologies, Rue de l’Ecole-De-Médecine 20, 1205, Genève, Switzerland
5
CNRS, Université Côte d’Azur, Nice, France
a
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Received:
11
June
2025
Accepted:
14
March
2026
Published online:
24
March
2026
Abstract
Quantum random number generators (QRNGs) use the inherent unpredictability of quantum mechanics to generate true randomness, as opposed to classical random number generators. However, ensuring the authenticity of this randomness still requires robust verification. Self-testing QRNGs address this need by enabling the validation of the randomness produced based on the observed data from the experiment while requiring few assumptions. In this work, we present a practical, self-testing QRNG designed to operate with an untrusted measurement device and a partially characterized source, allowing the user to check the adequate functioning of the setup in real time. Our experiment yields a rate of certified random bits of 450 kbps.
Key words: Quantum random number generator / Quantum randomness / Quantum information / Quantum optics
Present address: CNRS, Université Côte d’Azur, Nice, France
© The Author(s) 2026
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