dorsal/arxiv
View SchemaEntanglement generation in harmonic chains: tagging by squeezing
| Authors | M. Paternostro, M. S. Kim, E. Park, J. Lee |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0506148 |
| URL | https://arxiv.org/abs/quant-ph/0506148 |
| DOI | 10.1103/PhysRevA.72.052307 |
| Journal | Phys. Rev. A 72, 052307 (2005) |
Abstract
We address the problem of spring-like coupling between bosons in an open chain configuration where the counter-rotating terms are explicitly included. We show that fruitful insight can be gained by decomposing the time-evolution operator of this problem into a pattern of linear-optics elements. This allows us to provide a clear picture of the effects of the counter-rotating terms in the important problem of long-haul entanglement distribution. The analytic control over the variance matrix of the state of the bosonic register allows us to track the dynamics of the entanglement. This helps in designing a global addressing scheme, complemented by a proper initialization of the register, which quantitatively improves the entanglement between the extremal oscillators in the chain, thus providing a strategy for feasible long distance entanglement distribution.
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"abstract": "We address the problem of spring-like coupling between bosons in an open\nchain configuration where the counter-rotating terms are explicitly included.\nWe show that fruitful insight can be gained by decomposing the time-evolution\noperator of this problem into a pattern of linear-optics elements. This allows\nus to provide a clear picture of the effects of the counter-rotating terms in\nthe important problem of long-haul entanglement distribution. The analytic\ncontrol over the variance matrix of the state of the bosonic register allows us\nto track the dynamics of the entanglement. This helps in designing a global\naddressing scheme, complemented by a proper initialization of the register,\nwhich quantitatively improves the entanglement between the extremal oscillators\nin the chain, thus providing a strategy for feasible long distance entanglement\ndistribution.",
"arxiv_id": "quant-ph/0506148",
"authors": [
"M. Paternostro",
"M. S. Kim",
"E. Park",
"J. Lee"
],
"categories": [
"quant-ph",
"cond-mat.stat-mech"
],
"doi": "10.1103/PhysRevA.72.052307",
"journal_ref": "Phys. Rev. A 72, 052307 (2005)",
"title": "Entanglement generation in harmonic chains: tagging by squeezing",
"url": "https://arxiv.org/abs/quant-ph/0506148"
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