State redistribution as merging: introducing the coherent relay
| dc.creator | Oppenheim, Jonathan | |
| dc.date | 2008-05-07 | |
| dc.date.accessioned | 2026-07-07T09:37:42Z | |
| dc.date.available | 2026-07-07T09:37:42Z | |
| dc.description | State redistribution allows one party to optimally send part of her state to another party. Here we show that this can be derived simply from two applications of coherent state-merging. This provides a protocol whereby a middle party acts as a relay station to help another party more efficiently transfer quantum states. This also gives a protocol for state splitting and the reverse Shannon theorem (assisted or unassisted by side information), and allows one to use less classical communication for partial state-merging using a sub-protocol we call ebit repackaging. Thus state-merging generates the other primitives of quantum communication theory, reducing the hierarchy between members of the first family of quantum protocols. | |
| dc.description | 1 colour figure, circuit diagram available upon request | |
| dc.identifier | https://arxiv.org/abs/0805.1065 | |
| dc.identifier | http://arxiv.org/abs/0805.1065 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/160555 | |
| dc.subject | Quantum Physics | |
| dc.title | State redistribution as merging: introducing the coherent relay | |
| dc.type | text |