dorsal/arxiv
View SchemaSuppression of decoherence via strong intra-environmental coupling
| Authors | L. Tessieri, J. Wilkie |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0207051 |
| URL | https://arxiv.org/abs/quant-ph/0207051 |
| DOI | 10.1088/0305-4470/36/49/012 |
| Journal | Journal of Physics A: Mathematical and General, 36, pages 12305-12327 (2003) |
Abstract
We examine the effects of intra-environmental coupling on decoherence by constructing a low temperature spin--spin-bath model of an atomic impurity in a Debye crystal. The impurity interacts with phonons of the crystal through anti-ferromagnetic spin-spin interactions. The reduced density matrix of the central spin representing the impurity is calculated by dynamically integrating the full Schroedinger equation for the spin--spin-bath model for different thermally weighted eigenstates of the spin-bath. Exact numerical results show that increasing the intra-environmental coupling results in suppression of decoherence. This effect could play an important role in the construction of solid state quantum devices such as quantum computers.
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"abstract": "We examine the effects of intra-environmental coupling on decoherence by\nconstructing a low temperature spin--spin-bath model of an atomic impurity in a\nDebye crystal. The impurity interacts with phonons of the crystal through\nanti-ferromagnetic spin-spin interactions. The reduced density matrix of the\ncentral spin representing the impurity is calculated by dynamically integrating\nthe full Schroedinger equation for the spin--spin-bath model for different\nthermally weighted eigenstates of the spin-bath. Exact numerical results show\nthat increasing the intra-environmental coupling results in suppression of\ndecoherence. This effect could play an important role in the construction of\nsolid state quantum devices such as quantum computers.",
"arxiv_id": "quant-ph/0207051",
"authors": [
"L. Tessieri",
"J. Wilkie"
],
"categories": [
"quant-ph"
],
"doi": "10.1088/0305-4470/36/49/012",
"journal_ref": "Journal of Physics A: Mathematical and General, 36, pages\n 12305-12327 (2003)",
"title": "Suppression of decoherence via strong intra-environmental coupling",
"url": "https://arxiv.org/abs/quant-ph/0207051"
},
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