Quantum randomness protected against detection loophole attacks
Device and semi-device independent quantum randomness generators (DI- and SDI-QRNGs) are crucial for applications requiring private randomness. However, they are vulnerable to detection inefficiency attacks and this limits severely their usage for practical purposes. Here, we present a method for pr...
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| creator | Mironowicz, Piotr Cañas, Gustavo Cariñe, Jaime Gómez, Esteban S Barra, Johanna F Cabello, Adán Xavier, Guilherme B Lima, Gustavo Pawłowski, Marcin |
| description | Device and semi-device independent quantum randomness generators (DI- and SDI-QRNGs) are crucial for applications requiring private randomness. However, they are vulnerable to detection inefficiency attacks and this limits severely their usage for practical purposes. Here, we present a method for protecting SDI-QRNGs in prepare-and-measure scenarios against detection inefficiency attacks. The key idea is the introduction of a blocking device that adds failures in the communication between the preparation and measurement devices. We prove that, for any detection efficiency, there is a blocking rate that provides protection against these attacks. We experimentally demonstrate the generation of private randomness using weak coherent states and standard avalanche photo-detectors. |
| doi_str_mv | 10.48550/arxiv.1410.3443 |
| format | Article |
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| subjects | Computer simulation Copy protection Cryptography Cybersecurity Finite state machines Measuring instruments Numbers Photons Physics - Quantum Physics Random numbers Randomness |
| title | Quantum randomness protected against detection loophole attacks |
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