dorsal/arxiv
View SchemaGeneration of entangled states and error protection from adiabatic avoided level crossings
| Authors | Nicole F. Bell, R. F. Sawyer, Raymond R. Volkas, Yvonne Y. Y. Wong |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0109014 |
| URL | https://arxiv.org/abs/quant-ph/0109014 |
| DOI | 10.1103/PhysRevA.65.042328 |
| Journal | Phys.Rev. A65 (2002) 042328 |
Abstract
We consider the environment-affected dynamics of $N$ self-interacting particles living in one-dimensional double wells. Two topics are dealt with. First, we consider the production of entangled states of two-level systems. We show that by adiabatically varying the well biases we may dynamically generate maximally entangled states, starting from initially unentangled product states. Entanglement degradation due to a common type of environmental influence is then computed by solving a master equation. However, we also demonstrate that entanglement production is unaffected if the system-environment coupling is of the type that induces ``motional narrowing''. As our second but related topic, we construct a different master equation that seamlessly merges error protection/detection dynamics for quantum information with the environmental couplings responsible for producing the errors in the first place. Adiabatic avoided crossing schemes are used in both topics.
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"abstract": "We consider the environment-affected dynamics of $N$ self-interacting\nparticles living in one-dimensional double wells. Two topics are dealt with.\nFirst, we consider the production of entangled states of two-level systems. We\nshow that by adiabatically varying the well biases we may dynamically generate\nmaximally entangled states, starting from initially unentangled product states.\nEntanglement degradation due to a common type of environmental influence is\nthen computed by solving a master equation. However, we also demonstrate that\nentanglement production is unaffected if the system-environment coupling is of\nthe type that induces ``motional narrowing\u0027\u0027. As our second but related topic,\nwe construct a different master equation that seamlessly merges error\nprotection/detection dynamics for quantum information with the environmental\ncouplings responsible for producing the errors in the first place. Adiabatic\navoided crossing schemes are used in both topics.",
"arxiv_id": "quant-ph/0109014",
"authors": [
"Nicole F. Bell",
"R. F. Sawyer",
"Raymond R. Volkas",
"Yvonne Y. Y. Wong"
],
"categories": [
"quant-ph",
"hep-ph"
],
"doi": "10.1103/PhysRevA.65.042328",
"journal_ref": "Phys.Rev. A65 (2002) 042328",
"title": "Generation of entangled states and error protection from adiabatic avoided level crossings",
"url": "https://arxiv.org/abs/quant-ph/0109014"
},
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