| Autor: |
Smith, Peter Raymond, Marangon, Davide G., Lucamarini, Marco, Yuan, Zhiliang, Shields, Andrew |
| Rok vydání: |
2019 |
| Předmět: |
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| Zdroj: |
Physical Review A 99, 062326 (2019) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevA.99.062326 |
| Popis: |
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. |
| Databáze: |
arXiv |
| Externí odkaz: |
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