Unconditionally secure device-independent quantum key distribution with only two devices

Abstract

Device-independent quantum key distribution is the task of using uncharacterized quantum devices to establish a shared key between two users. If a protocol is secure regardless of the device behaviour, it can be used to generate a shared key even if the supplier of the devices is malicious. To date, all device-independent quantum key distribution protocols that are known to be secure require separate isolated devices for each entangled pair, which is a significant practical limitation. We introduce a protocol that requires Alice and Bob to have only one device each. Although inefficient, our protocol is unconditionally secure against an adversarial supplier limited only by locally enforced signalling constraints.

11 pages, minor changes

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Cited by in corpus (41)

• Bell nonlocality
• Advances in Quantum Cryptography
• Quantum Random Number Generators
• Fully device independent quantum key distribution
• Certified randomness in quantum physics
• Experimental demonstration of Gaussian protocols for one-sided device-independent quantum key distribution
• Memory Attacks on Device-Independent Quantum Cryptography
• Security of two-way quantum key distribution
• Quantum cryptography: key distribution and beyond
• Device-Independent Quantum Key Distribution with Local Bell Test
• Towards device-independent information processing on general quantum networks
• Full security of quantum key distribution from no-signaling constraints
• Device-independent quantum key distribution secure against adversaries with no long-term quantum memory
• Limits of privacy amplification against non-signalling memory attacks
• Towards a realization of device-independent quantum key distribution
• Experimental investigation of nonlocal advantage of quantum coherence
• Device-Independent Relativistic Quantum Bit Commitment
• Parallel Device-Independent Quantum Key Distribution
• Device-independent quantum key distribution with arbitrarily small nonlocality
• Strong monogamies of no-signaling violations for bipartite correlation Bell inequalities
• Device-independence for two-party cryptography and position verification
• Network nonlocality sharing via weak measurements in the generalized star network configuration
• Completely Device Independent Quantum Key Distribution
• Non-signaling Causal Hierarchy of General Multisource Networks
• Multipartite Nonlocality as a Resource and Quantum Correlations Having Indefinite Causal Order
• Bounds on quantum nonlocality via partial transposition
• Device-independent quantum key distribution with spin-coupled cavities
• Test to separate quantum theory from non-signaling theories
• Attacks on Fixed Apparatus Quantum Key Distribution Schemes
• Device-independent quantum key distribution based on measurement inputs
• Limitations on device independent key secure against non signaling adversary via the squashed non-locality
• Localizing and excluding quantum information; or, how to share a quantum secret in spacetime
• Multi-system measurements in generalized probabilistic theories and their role in information processing
• Robust protocols for securely expanding randomness and distributing keys using untrusted quantum devices
• A No-go theorem for device-independent security in relativistic causal theories
• Relativistic Causality vs. No-Signaling as the limiting paradigm for correlations in physical theories
• Composable framework for device-independent state certification
• Genuine multipartite entanglement is not necessary for standard device-independent conference key agreement
• Multi-partite squash operation and its application to device-independent quantum key distribution
• Reversed Space Attacks
• Violation of space-time Bell-CHSH inequality beyond Tsirelson bound via post selection and quantum cryptography