dorsal/arxiv
View SchemaEntanglement-swapping boxes and their communication properties
| Authors | Andrzej Grudka, Michal Horodecki, Pawel Horodecki, Ryszard Horodecki, Marco Piani |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0703095 |
| URL | https://arxiv.org/abs/quant-ph/0703095 |
| DOI | 10.1103/PhysRevA.77.060307 |
| Journal | Phys. Rev. A 77, 060307(R) (2008) |
Abstract
We pose the fundamental question of communication properties of primitives irrespectively of their implementation. To illustrate the idea we introduce the concept of entanglement-swapping boxes, i.e. we consider any quantum operations which perform entanglement swapping, not necessarily via simple quantum teleportation. We ask a question about the properties of such boxes., i.e. what local operations and how much classical communication are needed to perform them. We also ask if any box which performs entanglement swapping can be used to establish classical communication. We show that each box needs at least two bits of classical communication to perform it. It is also shown that each box can be used for classical communication and, most importantly, that there exist boxes which allow to communicate at most one bit. Surprisingly we find basic irreversibility in the process of entanglement swapping with respect to its communication properties.
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"abstract": "We pose the fundamental question of communication properties of primitives\nirrespectively of their implementation. To illustrate the idea we introduce the\nconcept of entanglement-swapping boxes, i.e. we consider any quantum operations\nwhich perform entanglement swapping, not necessarily via simple quantum\nteleportation. We ask a question about the properties of such boxes., i.e. what\nlocal operations and how much classical communication are needed to perform\nthem. We also ask if any box which performs entanglement swapping can be used\nto establish classical communication. We show that each box needs at least two\nbits of classical communication to perform it. It is also shown that each box\ncan be used for classical communication and, most importantly, that there exist\nboxes which allow to communicate at most one bit. Surprisingly we find basic\nirreversibility in the process of entanglement swapping with respect to its\ncommunication properties.",
"arxiv_id": "quant-ph/0703095",
"authors": [
"Andrzej Grudka",
"Michal Horodecki",
"Pawel Horodecki",
"Ryszard Horodecki",
"Marco Piani"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.77.060307",
"journal_ref": "Phys. Rev. A 77, 060307(R) (2008)",
"title": "Entanglement-swapping boxes and their communication properties",
"url": "https://arxiv.org/abs/quant-ph/0703095"
},
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