Experimental implementation of bit commitment in the noisy-storage model
| Autor: | Ng, Nelly Huei Ying, Joshi, Siddarth Koduru, Chia, Chen Ming, Kurtsiefer, Christian, Wehner, Stephanie |
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| Rok vydání: | 2012 |
| Předmět: | |
| Zdroj: | Nature Communications 3, Article number: 1326 (2012) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1038/ncomms2268 |
| Popis: | Fundamental primitives such as bit commitment and oblivious transfer serve as building blocks for many other two-party protocols. Hence, the secure implementation of such primitives are important in modern cryptography. In this work, we present a bit commitment protocol which is secure as long as the attacker's quantum memory device is imperfect. The latter assumption is known as the noisy-storage model. We experimentally executed this protocol by performing measurements on polarization-entangled photon pairs. Our work includes a full security analysis, accounting for all experimental error rates and finite size effects. This demonstrates the feasibility of two-party protocols in this model using real-world quantum devices. Finally, we provide a general analysis of our bit commitment protocol for a range of experimental parameters. Comment: 21 pages (7 main text +14 appendix), 6+3 figures. New version changed author's name from Huei Ying Nelly Ng to Nelly Huei Ying Ng, for consistency with other publications |
| Databáze: | arXiv |
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