|Title||Fully device-independent quantum key distribution using synchronous correlations|
|Publication Type||Journal Article|
|Year of Publication||2021|
|Authors||Rodrigues, N, Lackey, B|
|Keywords||FOS: Physical sciences, Quantum Physics (quant-ph)|
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.