



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<p>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 &quot;synchronicity&quot; 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 &quot;locality&quot; (or &quot;causality&quot;) loophole: an unbounded adversary with even a small uncertainty about the users&#39; choice of measurement bases cannot produce any almost synchronous correlation that approximately maximally violates a synchronous Bell inequality.</p>10aFOS: Physical sciences10aQuantum Physics (quant-ph)1 aRodrigues, Nishant1 aLackey, Brad  uhttps://arxiv.org/abs/2110.14530