Title:	Certified random number generation using quantum computers
Authors:	Nath, Pingal Pratyush Sinha, Aninda Sinha, Urbasi
Issue Date:	19-Sep-2025
Publisher:	Frontiers in Quantum Science and Technology
Citation:	Frontiers in Quantum Science and Technology, 2025, Vol. 4, AR No. 1661544
Abstract:	We investigate how current noisy quantum computers can be leveraged for generating secure random numbers certified by Quantum Mechanics. While random numbers can be generated and certified in a device-independent manner through the violation of Bell’s inequality, this method requires significant spatial separation to satisfy the no-signaling condition, making it impractical for implementation on a single quantum computer. Instead, we employ temporal correlations to generate randomness by violating the Leggett-Garg inequality, which relies on the No-Signaling in Time condition to certify randomness, thus overcoming spatial constraints. By applying this protocol to different IBMQ platforms, we demonstrate the feasibility of secure, semi-device-independent random number generation using low-depth circuits with single-qubit gates. We show how error mitigation techniques lead to LGI violation compatible with theoretical predictions on the existing IBMQ machines.
Description:	Open Access. Also available at arXiv.org (one of the alternative locations)
URI:	http://hdl.handle.net/2289/8695
ISSN:	2813-2181
Alternative Location:	https://doi.org/10.48550/arXiv.2502.02973 https://doi.org/10.3389/frqst.2025.1661544
Copyright:	© 2025 Nath, Sinha and Sinha
Appears in Collections:	Research Papers (LAMP)

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