High key rate quantum conference key agreement with unconditional security
arXiv:2006.10230 · doi:10.1109/ACCESS.2021.3113939
Abstract
Quantum cryptography is a major ingredient of the future quantum internet that promises various secure communication tasks. Quantum conference key agreement (CKA) is an important cryptographic primitive of quantum cryptography, which provides the conference key among multiple users simultaneously. However, quantum CKA is currently far from practical application due to the low conference key rate. Here, we propose a quantum CKA protocol of three users with information-theoretic security. Our protocol only requires phase-randomized weak coherent sources and threshold single-photon detectors, and is anticipated to be experimentally demonstrated over 600 km under current technology. Our scheme can be widely implemented in the approaching large-scale quantum network.
6 pages, 3 figures, accepted by IEEE Access
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Cited by in corpus (13)
- Scalable High-Rate Twin-Field Quantum Key Distribution Networks without Constraint of Probability and Intensity
- Breaking universal limitations on quantum conference key agreement without quantum memory
- Overcoming fundamental bounds on quantum conference key agreement
- All-Photonic Quantum Repeater for Multipartite Entanglement Generation
- Multi-field quantum conferencing overcomes the network capacity limit
- Experimental Measurement-Device-Independent Quantum Cryptographic Conferencing
- Continuous-variable measurement device independent quantum conferencing with post-selection
- Twin-field-based multi-party quantum key agreement
- Efficient source-independent quantum conference key agreement
- Experimental Efficient Source-Independent Quantum Conference Key Agreement
- Impact of imperfect measurements on multi-party quantum key distribution
- Genuine multipartite entanglement is not necessary for standard device-independent conference key agreement
- Experimental Phase-Matching Quantum Cryptographic Conferencing in Symmetric and Asymmetric Fiber Channels