An eavesdropping attack on a trusted continuous-variable quantum random number generator
| Autor: | Carolin Lüders, Marc Aßmann, Johannes Thewes |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Physics
Quantum Physics business.industry Local oscillator Vacuum state Electrical engineering FOS: Physical sciences Eavesdropping 01 natural sciences 010305 fluids & plasmas Generator (circuit theory) Continuous variable 0103 physical sciences Hardware random number generator 010306 general physics business Quantum Physics (quant-ph) Quantum Randomness Computer Science::Cryptography and Security |
| DOI: | 10.48550/arxiv.1910.09520 |
| Popis: | Harnessing quantum processes is an efficient method to generate truly indeterministic random numbers, which are of fundamental importance for cryptographic protocols, security applications or Monte-Carlo simulations. Recently, quantum random number generators based on continuous variables have gathered a lot of attention due to the potentially high bit rates they can deliver. Especially quadrature measurements on shot-noise limited states have been studied in detail as they do not offer any side information to potential adversaries under ideal experimental conditions. However, they may be subject to additional classical noise beyond the quantum limit, which may become a source of side information for eavesdroppers. While such eavesdropping attacks have been investigated in theory in some detail, experimental studies are still rare. We experimentally realize a continuous variable eavesdropping attack, based on heterodyne detection, on a trusted quantum random number generator and discuss the limitations for secure random number generation that arise. Comment: 12 pages, 7 figures |
| Databáze: | OpenAIRE |
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