A monogamy-of-entanglement game with applications to device-independent quantum cryptography
| العنوان: | A monogamy-of-entanglement game with applications to device-independent quantum cryptography |
|---|---|
| المؤلفون: | Tomamichel, M., Fehr, Serge, Kaniewski, J., Wehner, Stephanie, Johansson, T., Nguyen, P.Q. |
| المساهمون: | Cryptology |
| المصدر: | New Journal of Physics, 15 |
| سنة النشر: | 2013 |
| مصطلحات موضوعية: | Quantum Physics, Uncertainty principle, Theoretical computer science, Computer science, Fluids & Plasmas, FOS: Physical sciences, General Physics and Astronomy, Quantum entanglement, Quantum key distribution, Outcome (game theory), Quantum cryptography, Bounded function, Quantum system, Quantum Physics (quant-ph), BB84, Quantum |
| الوصف: | We consider a game in which two separate laboratories collaborate to prepare a quantum system and are then asked to guess the outcome of a measurement performed by a third party in a random basis on that system. Intuitively, by the uncertainty principle and the monogamy of entanglement, the probability that both players simultaneously succeed in guessing the outcome correctly is bounded. We are interested in the question of how the success probability scales when many such games are performed in parallel. We show that any strategy that maximizes the probability to win every game individually is also optimal for the parallel repetition of the game. Our result implies that the optimal guessing probability can be achieved without the use of entanglement. We explore several applications of this result. First, we show that it implies security for standard BB84 quantum key distribution when the receiving party uses fully untrusted measurement devices, i.e. we show that BB84 is one-sided device independent. Second, we show how our result can be used to prove security of a one-round position-verification scheme. Finally, we generalize a well-known uncertainty relation for the guessing probability to quantum side information. also presented at EuroCrypt 2013 |
| وصف الملف: | application/pdf |
| اللغة: | English |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::207fe2d42f535877cc9eae196363176d https://ir.cwi.nl/pub/21811 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....207fe2d42f535877cc9eae196363176d |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |