Coherent-state quantum key distribution without random basis switching
- 9 February 2006
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 73 (2), 022316
- https://doi.org/10.1103/physreva.73.022316
Abstract
The random switching of measurement bases is commonly assumed to be a necessary step of quantum key distribution protocols. In this paper we present a no-switching protocol and show that switching is not required for coherent-state continuous-variable quantum key distribution. Further, this protocol achieves higher information rates and a simpler experimental setup compared to previous protocols that rely on switching. We propose an optimal eavesdropping attack against this protocol, assuming individual Gaussian attacks. Finally, we investigate and compare the no-switching protocol applied to the original Bennett-Brassard 1984 scheme.Keywords
This publication has 30 references indexed in Scilit:
- No-Switching Quantum Key Distribution Using Broadband Modulated Coherent LightPhysical Review Letters, 2005
- Quantum information with continuous variablesReviews of Modern Physics, 2005
- Quantum Cryptography Without SwitchingPhysical Review Letters, 2004
- Optimal cloning for finite distributions of coherent statesPhysical Review A, 2004
- Continuous Variable Quantum Cryptography: Beating the 3 dB Loss LimitPhysical Review Letters, 2002
- Continuous Variable Quantum Cryptography Using Coherent StatesPhysical Review Letters, 2002
- Secure quantum key distribution using squeezed statesPhysical Review A, 2001
- Quantum cryptography with a predetermined key, using continuous-variable Einstein-Podolsky-Rosen correlationsPhysical Review A, 2000
- Continuous variable quantum cryptographyPhysical Review A, 1999
- Unconditional Security of Quantum Key Distribution over Arbitrarily Long DistancesScience, 1999