dorsal/arxiv
View SchemaEntangled quantum states as direction indicators
| Authors | Asher Peres, Petra F. Scudo |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0010085 |
| URL | https://arxiv.org/abs/quant-ph/0010085 |
| DOI | 10.1103/PhysRevLett.86.4160 |
| Journal | Phys. Rev. Lett. 86 (2001) 4160 |
Abstract
We consider the use of N spin-1/2 particles for indicating a direction in space. If N>2, their optimal state is entangled. For large N, the mean square error decreases as N^{-2} (rather than N^{-1} for parallel spins).
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"abstract": "We consider the use of N spin-1/2 particles for indicating a direction in\nspace. If N\u003e2, their optimal state is entangled. For large N, the mean square\nerror decreases as N^{-2} (rather than N^{-1} for parallel spins).",
"arxiv_id": "quant-ph/0010085",
"authors": [
"Asher Peres",
"Petra F. Scudo"
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"doi": "10.1103/PhysRevLett.86.4160",
"journal_ref": "Phys. Rev. Lett. 86 (2001) 4160",
"title": "Entangled quantum states as direction indicators",
"url": "https://arxiv.org/abs/quant-ph/0010085"
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