Abstract
Device-independent cryptography represent the strongest form of physical security: it is based on general physical laws and does not require any detailed knowledge or control of the physical devices used in the protocol. We discuss a general security proof valid for a large class of device-independent quantum key distribution protocols. The proof relies on the validity of Quantum Theory and requires that the events generating the raw key are causally disconnected. We then apply the proof to the chained Bell inequalities and compute the corresponding secret-key rates.
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Acknowledgements
This work is supported by the Spanish MINCIN though projects FIS2007-60182 and FIS2010-14830, CHIST-ERA DIQIP, EU Project QCS and an ERC Starting Grant PERCENT, CatalunyaCaixa.
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Dhara, C., Masanes, L., Pironio, S., Acín, A. (2014). Security of Device-Independent Quantum Key Distribution Protocols. In: Bacon, D., Martin-Delgado, M., Roetteler, M. (eds) Theory of Quantum Computation, Communication, and Cryptography. TQC 2011. Lecture Notes in Computer Science(), vol 6745. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-54429-3_2
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DOI: https://doi.org/10.1007/978-3-642-54429-3_2
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