Entanglement swapping secures multiparty quantum communication

Abstract

Extending the eavesdropping strategy devised by Zhang, Li and Guo [Phys. Rev. A 63, 036301 (2001)], we show that the multiparty quantum communication protocol based on entanglement swapping, which was proposed by Cabello [quant-ph/0009025], is not secure. We modify the protocol so that entanglement swapping can secure multiparty quantum communication, such as multiparty quantum key distribution and quantum secret sharing of classical information, and show that the modified protocol is secure against the Zhang-Li-Guo's strategy for eavesdropping as well as the basic intercept-resend attack.

16 pages, 4 figures

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Cited by in corpus (4)

• Multiparty Quantum Secret Sharing Based on Entanglement Swapping
• Quantum secure direct communication network with Einstein-Podolsky-Rosen pairs
• Quantum key distribution without alternative measurements and rotations
• Entanglement swapping for Bell states and Greenberger-Horne-Zeilinger states in qubit systems