Phys. Rev. A 69, 034301 (2004) [4 pages]Secure key distribution by swapping quantum entanglementReceived 26 June 2003; published 5 March 2004 We report two key distribution schemes achieved by swapping quantum entanglement. Using two Bell states, two bits of secret key can be shared between two distant parties that play symmetric and equal roles. We also address eavesdropping attacks against the schemes. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.69.034301
DOI:
10.1103/PhysRevA.69.034301
PACS:
03.67.Dd, 03.67.Hk
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