Smith, P. R., Marangon, D. G., Lucamarini, M. orcid.org/0000-0002-7351-4622 et al. (2 more authors) (2019) Simple source device-independent continuous-variable quantum random number generator. Physical Review A. 062326. ISSN 1094-1622
Abstract
Phase-randomized optical homodyne detection is a well-known technique for performing quantum state tomography. So far, it has been mainly considered a sophisticated tool for laboratory experiments but unsuitable for practical applications. In this work, we change the perspective and employ this technique to set up a practical continuous-variable quantum random number generator. We exploit a phase-randomized local oscillator realized with a gain-switched laser to bound the min-entropy and extract true randomness from a completely uncharacterized input, potentially controlled by a malicious adversary. Our proof-of-principle implementation achieves an equivalent rate of 270 Mbit/s. In contrast to other source-device-independent quantum random number generators, the one presented herein does not require additional active optical components, thus representing a viable solution for future compact, modulator-free, certified generators of randomness.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | ©2019 American Physical Society. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Physics (York) |
Depositing User: | Pure (York) |
Date Deposited: | 27 Oct 2020 12:10 |
Last Modified: | 21 Jan 2025 17:50 |
Published Version: | https://doi.org/10.1103/PhysRevA.99.062326 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1103/PhysRevA.99.062326 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:167278 |