dorsal/arxiv
View SchemaQuantum Cloning and Distributed Measurements
| Authors | Dagmar Bruss, John Calsamiglia, Norbert Lütkenhaus |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0011073 |
| URL | https://arxiv.org/abs/quant-ph/0011073 |
| DOI | 10.1103/PhysRevA.63.042308 |
| Journal | Phys. Rev. A 63, 042308 (2001) |
Abstract
We study measurements on various subsystems of the output of a universal 1 to 2 cloning machine, and establish a correspondence between these measurements at the output and effective measurements on the original input. We show that one can implement sharp effective measurement elements by measuring only two out of the three output systems. Additionally, certain complete sets of sharp measurements on the input can be realised by measurements on the two clones. Furthermore, we introduce a scheme that allows to restore the original input in one of the output bits, by using measurements and classical communication -- a protocol that resembles teleportation.
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"abstract": "We study measurements on various subsystems of the output of a universal 1 to\n2 cloning machine, and establish a correspondence between these measurements at\nthe output and effective measurements on the original input. We show that one\ncan implement sharp effective measurement elements by measuring only two out of\nthe three output systems. Additionally, certain complete sets of sharp\nmeasurements on the input can be realised by measurements on the two clones.\nFurthermore, we introduce a scheme that allows to restore the original input in\none of the output bits, by using measurements and classical communication -- a\nprotocol that resembles teleportation.",
"arxiv_id": "quant-ph/0011073",
"authors": [
"Dagmar Bruss",
"John Calsamiglia",
"Norbert L\u00fctkenhaus"
],
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"quant-ph"
],
"doi": "10.1103/PhysRevA.63.042308",
"journal_ref": "Phys. Rev. A 63, 042308 (2001)",
"title": "Quantum Cloning and Distributed Measurements",
"url": "https://arxiv.org/abs/quant-ph/0011073"
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