01295nas a2200145 4500008004100000245008500041210006900126260001500195520080400210653002701014653003101041100002301072700001701095856003701112 2021 eng d00aFully device-independent quantum key distribution using synchronous correlations0 aFully deviceindependent quantum key distribution using synchrono c10/27/20213 a
We derive a device-independent quantum key distribution protocol based on synchronous correlations and their Bell inequalities. This protocol offers several advantages over other device-independent schemes including symmetry between the two users and no need for preshared randomness. We close a "synchronicity" loophole by showing that an almost synchronous correlation inherits the self-testing property of the associated synchronous correlation. We also pose a new security assumption that closes the "locality" (or "causality") loophole: an unbounded adversary with even a small uncertainty about the users' choice of measurement bases cannot produce any almost synchronous correlation that approximately maximally violates a synchronous Bell inequality.
10aFOS: Physical sciences10aQuantum Physics (quant-ph)1 aRodrigues, Nishant1 aLackey, Brad uhttps://arxiv.org/abs/2110.14530