Entanglement-Enhanced Quantum Key Distribution
| dc.creator | Ahonen, Olli | |
| dc.creator | Mottonen, Mikko | |
| dc.creator | O'Brien, Jeremy L. | |
| dc.date | 2007-12-27 | |
| dc.date | 2008-10-07 | |
| dc.date.accessioned | 2026-07-07T10:07:35Z | |
| dc.date.available | 2026-07-07T10:07:35Z | |
| dc.description | We present and analyze a quantum key distribution protocol based on sending entangled N-qubit states instead of single-qubit ones as in the trail-blazing scheme by Bennett and Brassard (BB84). Since the qubits are sent individually, an eavesdropper is limited to accessing them one by one. In an intercept-resend attack, this fundamental restriction allows one to make the eavesdropper's information on the transmitted key vanish if even one of the qubits is not intercepted. The implied upper bound 1/(2N) for Eve's information is further shown not to be the lowest since in the case N = 2, the information can be reduced to less than 30% of that in BB84. In general, the protocol is at least as secure as BB84. | |
| dc.description | 7 pages, 5 figures, new results | |
| dc.identifier | https://arxiv.org/abs/0712.4241 | |
| dc.identifier | http://arxiv.org/abs/0712.4241 | |
| dc.identifier | Physical Review A 78, 032314 (2008) | |
| dc.identifier | doi:10.1103/PhysRevA.78.032314 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/170687 | |
| dc.subject | Quantum Physics | |
| dc.title | Entanglement-Enhanced Quantum Key Distribution | |
| dc.type | text |