dorsal/arxiv
View SchemaEntanglement induced in spin-1/2 particles by a spin chain near its critical points
| Authors | X. X. Yi, H. T. Cui, L. C. Wang |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0511026 |
| URL | https://arxiv.org/abs/quant-ph/0511026 |
| DOI | 10.1103/PhysRevA.74.054102 |
| Journal | Phys. Rev. A 74, 054102(2006) |
Abstract
A relation between entanglement and criticality of spin chains is established. The entanglement we exploit is shared between auxiliary particles, which are isolated from each other, but are coupled to the same critical spin-1/2 chain. We analytically evaluate the reduced density matrix, and numerically show the entanglement of the auxiliary particles in the proximity of the critical points of the spin chain. We find that the entanglement induced by the spin-chain may reach one, and it can signal very well the critical points of the chain. A physical understanding and experimental realization with trapped ions are presented.
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"abstract": "A relation between entanglement and criticality of spin chains is\nestablished. The entanglement we exploit is shared between auxiliary particles,\nwhich are isolated from each other, but are coupled to the same critical\nspin-1/2 chain. We analytically evaluate the reduced density matrix, and\nnumerically show the entanglement of the auxiliary particles in the proximity\nof the critical points of the spin chain. We find that the entanglement induced\nby the spin-chain may reach one, and it can signal very well the critical\npoints of the chain. A physical understanding and experimental realization with\ntrapped ions are presented.",
"arxiv_id": "quant-ph/0511026",
"authors": [
"X. X. Yi",
"H. T. Cui",
"L. C. Wang"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.74.054102",
"journal_ref": "Phys. Rev. A 74, 054102(2006)",
"title": "Entanglement induced in spin-1/2 particles by a spin chain near its critical points",
"url": "https://arxiv.org/abs/quant-ph/0511026"
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