Distributed Entanglement
| dc.creator | Coffman, Valerie | |
| dc.creator | Kundu, Joydip | |
| dc.creator | Wootters, William K. | |
| dc.date | 1999-07-13 | |
| dc.date | 1999-07-24 | |
| dc.date.accessioned | 2026-07-07T12:17:14Z | |
| dc.date.available | 2026-07-07T12:17:14Z | |
| dc.description | Consider three qubits A, B, and C which may be entangled with each other. We show that there is a trade-off between A's entanglement with B and its entanglement with C. This relation is expressed in terms of a measure of entanglement called the "tangle," which is related to the entanglement of formation. Specifically, we show that the tangle between A and B, plus the tangle between A and C, cannot be greater than the tangle between A and the pair BC. This inequality is as strong as it could be, in the sense that for any values of the tangles satisfying the corresponding equality, one can find a quantum state consistent with those values. Further exploration of this result leads to a definition of the "three-way tangle" of the system, which is invariant under permutations of the qubits. | |
| dc.description | 13 pages LaTeX; references added, derivation of Eq. (11) simplified | |
| dc.identifier | https://arxiv.org/abs/quant-ph/9907047 | |
| dc.identifier | http://arxiv.org/abs/quant-ph/9907047 | |
| dc.identifier | Phys.Rev.A61:052306,2000 | |
| dc.identifier | doi:10.1103/PhysRevA.61.052306 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/212053 | |
| dc.subject | Quantum Physics | |
| dc.title | Distributed Entanglement | |
| dc.type | text |