Device-Independent Quantum Key Distribution with Commuting Measurements

Abstract

We consider quantum key distribution in the device-independent scenario, i.e., where the legitimate parties do not know (or trust) the exact specification of their apparatus. We show how secure key distribution can be realized against the most general attacks by a quantum adversary under the condition that measurements on different subsystems by the honest parties commute.

26 pages. See also the related work arXiv:1009.1567

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• Quantum Tagging: Authenticating Location via Quantum Information and Relativistic Signalling Constraints
• Unconditionally secure device-independent quantum key distribution with only two devices
• Full security of quantum key distribution from no-signaling constraints
• Quantum Tasks in Minkowski Space
• Towards a realization of device-independent quantum key distribution
• The Link between Entropic Uncertainty and Nonlocality
• A framework for quantum-secure device-independent randomness expansion
• A physical approach to Tsirelson's problem
• The Smooth Entropy Formalism for von Neumann Algebras
• What does an experimental test of quantum contextuality prove or disprove?
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• Why Classical Certification is Impossible in a Quantum World
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• A parallel repetition theorem for entangled two-player one-round games under product distributions
• A No-go theorem for device-independent security in relativistic causal theories
• Device-independent secret key rates via a post-selected Bell inequality