Quantum repeaters and quantum key distribution: Analysis of secret-key rates
- 17 May 2013
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 87 (5)
- https://doi.org/10.1103/physreva.87.052315
Abstract
We analyze various prominent quantum repeater protocols in the context of long-distance quantum key distribution. These protocols are the original quantum repeater proposal by Briegel, D\"ur, Cirac and Zoller, the so-called hybrid quantum repeater using optical coherent states dispersively interacting with atomic spin qubits, and the Duan-Lukin-Cirac-Zoller-type repeater using atomic ensembles together with linear optics and, in its most recent extension, heralded qubit amplifiers. For our analysis, we investigate the most important experimental parameters of every repeater component and find their minimally required values for obtaining a nonzero secret key. Additionally, we examine in detail the impact of device imperfections on the final secret key rate and on the optimal number of rounds of distillation when the entangled states are purified right after their initial distribution.Other Versions
This publication has 65 references indexed in Scilit:
- Efficient heralding of photonic qubits with applications to device-independent quantum key distributionPhysical Review A, 2011
- Heralded-qubit amplifiers for practical device-independent quantum key distributionPhysical Review A, 2011
- Proposal for Implementing Device-Independent Quantum Key Distribution Based on a Heralded Qubit AmplifierPhysical Review Letters, 2010
- The security of practical quantum key distributionReviews of Modern Physics, 2009
- Device-Independent Security of Quantum Cryptography against Collective AttacksPhysical Review Letters, 2007
- Quantum relays for long distance quantum cryptographyJournal of Modern Optics, 2005
- Long Distance Quantum Teleportation in a Quantum Relay ConfigurationPhysical Review Letters, 2004
- Quantum cryptographyReviews of Modern Physics, 2002
- Quantum Repeaters: The Role of Imperfect Local Operations in Quantum CommunicationPhysical Review Letters, 1998
- Quantum cryptography based on Bell’s theoremPhysical Review Letters, 1991