The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 17, 2026
Filed:
Mar. 08, 2023
Quantinuum Ltd, London, GB;
Mario Berta, Los Angeles, CA (US);
Florian Curchod, Trumpington, GB;
Cameron Foreman, Herne Bay, GB;
Sherilyn Wright, London, GB;
Alec Edgington, London, GB;
Yui Chi Yeung, Cumnor, GB;
Hyejung Jee, London, GB;
Mafalda Ludovino Almeida, Cambridge, GB;
Matthew Hoban, Oxford, GB;
Elizabeth Lee, Hounslow, GB;
Quantinuum Ltd, London, GB;
Abstract
This disclosure relates to protocols and systems for generating random bit strings by amplifying weak bit strings using certified quantum random bit strings generated by measuring a quantum state of entangled photons. Some disclosed systems include a quantum apparatus comprising one or more quantum systems configured to generate entangled photons and measure their quantum state. Certain disclosed systems include one or more security tests, wherein at least one security test evaluates the quantum nature of the measurements using a Bell inequality. A randomness extractor can amplify the randomness of weak random strings using random strings certified by the security tests. The generated random bit strings may be used as cryptographic keys.