dorsal/arxiv
View SchemaEmbedding dissipation and decoherence in unitary evolution schemes
| Authors | A. R. P. Rau, R. A. Wendell |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0205113 |
| URL | https://arxiv.org/abs/quant-ph/0205113 |
| DOI | 10.1103/PhysRevLett.89.220405 |
| Journal | Phys. Rev. Lett. 89, 220405 (2002) |
Abstract
Dissipation and decoherence, and the evolution from pure to mixed states in quantum physics are handled through master equations for the density matrix. By embedding elements of this matrix in a higher-dimensional Liouville-Bloch equation, the methods of unitary integration are adapted to solve for the density matrix as a function of time, including the non-unitary effects of dissipation and decoherence. The input requires only solutions of classical, initial value time-dependent equations. Results are illustrated for a damped driven two-level system.
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"abstract": "Dissipation and decoherence, and the evolution from pure to mixed states in\nquantum physics are handled through master equations for the density matrix. By\nembedding elements of this matrix in a higher-dimensional Liouville-Bloch\nequation, the methods of unitary integration are adapted to solve for the\ndensity matrix as a function of time, including the non-unitary effects of\ndissipation and decoherence. The input requires only solutions of classical,\ninitial value time-dependent equations. Results are illustrated for a damped\ndriven two-level system.",
"arxiv_id": "quant-ph/0205113",
"authors": [
"A. R. P. Rau",
"R. A. Wendell"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevLett.89.220405",
"journal_ref": "Phys. Rev. Lett. 89, 220405 (2002)",
"title": "Embedding dissipation and decoherence in unitary evolution schemes",
"url": "https://arxiv.org/abs/quant-ph/0205113"
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