High-rate measurement-device-independent quantum cryptography

High-rate measurement-device-independent quantum cryptography

Graphical Methods in Device-Independent Quantum Cryptography

We introduce a framework for graphical security proofs in device-independent quantum cryptography using the methods of categorical quantum mechanics. We are optimistic that this approach will make some of the highly complex proofs in quantum cryptography more accessible, facilitate the discovery of new proofs, and enable automated proof verification. As an example of our framework, we reprove a...

Measurement-device-independent quantum digital signatures

Ittoop Vergheese Puthoor, Ryan Amiri, Petros Wallden, Marcos Curty, and Erika Andersson SUPA, Institute of Photonics and Quantum Sciences, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom LFCS, School of Informatics, University of Edinburgh, 10 Crichton Street, Edinburgh EH8 9AB, United Kingdom EI Telecomunicación, Department of Signal Theory and Communications, University of Vigo, Vi...

Experimental measurement-device-independent quantum key distribution.

Quantum key distribution is proven to offer unconditional security in communication between two remote users with ideal source and detection. Unfortunately, ideal devices never exist in practice and device imperfections have become the targets of various attacks. By developing up-conversion single-photon detectors with high efficiency and low noise, we faithfully demonstrate the measurement-dev...

Finite-size analysis of measurement-device-independent quantum cryptography with continuous variables