Abstract
A protocol is said to be device-independent when the level of its performance can be inferred without making any assumptions regarding the inner workings of the apparatus used to implement it. In this paper we introduce a device-independent weak coin flipping protocol based on a single GHZ test. Interestingly, the protocol calls for the exchange of (quantum) systems between participants; a feature which is not trivial to incorporate in a device-independent setting where a system’s behavior may depend on the time, location, and its history. Alice’s and Bob’s maximal cheating probabilities are given by \(\simeq 0.974\) and \(\cos ^2(\frac{\pi }{8}) \simeq 0.854\).
N. Aharon— Racah Institute of Physics, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
A. Chailloux— SECRET Project Team, INRIA Paris-Recquencourt, 78153 Le Chesnay Cedex, France.
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Acknowledgements
We acknowledge support from the BSF (grant no. 32/08) (N.A.), the Inter-University Attraction Poles Programme (Belgian Science Policy) under Project IAP-P6/10 (Photonics@be) (S.M., S.P., J.S), a BB2B grant of the Brussels-Capital region (S.P.), the Fonds de la Recherche Scienitifique – FNRS (J.S.), the projects ANR-09-JCJC-0067-01, ANR- 08-EMER-012 (A.C., I.K.), and the project QCS (grant 255961) of the E.U. (A.C., I.K., S.M., S.P., J.S.).
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Aharon, N., Chailloux, A., Kerenidis, I., Massar, S., Pironio, S., Silman, J. (2014). Weak Coin Flipping in a Device-Independent Setting. 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_1
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