dorsal/arxiv
View SchemaDescription of quantum dynamics of open systems based on collision-like models
| Authors | Mario Ziman, Peter Stelmachovic, Vladimir Buzek |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0410161 |
| URL | https://arxiv.org/abs/quant-ph/0410161 |
| Journal | Open systems and information dynamics 12, No.1, pp. 81-91 (2005) |
Abstract
Master equations in the Lindblad form describe evolution of open quantum systems that is completely positive and simultaneously has a semigroup property. We analyze a possibility to derive this type of master equations from an intrinsically discrete dynamics that is modelled as a sequence of collisions between a given quantum system (a qubit) with particles that form the environment. In order to illustrate our approach we analyze in detail how a process of an exponential decay and a process of decoherence can be derived from a collision-like model in which particular collisions are described by SWAP and controlled-NOT interactions, respectively.
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"abstract": "Master equations in the Lindblad form describe evolution of open quantum\nsystems that is completely positive and simultaneously has a semigroup\nproperty. We analyze a possibility to derive this type of master equations from\nan intrinsically discrete dynamics that is modelled as a sequence of collisions\nbetween a given quantum system (a qubit) with particles that form the\nenvironment. In order to illustrate our approach we analyze in detail how a\nprocess of an exponential decay and a process of decoherence can be derived\nfrom a collision-like model in which particular collisions are described by\nSWAP and controlled-NOT interactions, respectively.",
"arxiv_id": "quant-ph/0410161",
"authors": [
"Mario Ziman",
"Peter Stelmachovic",
"Vladimir Buzek"
],
"categories": [
"quant-ph"
],
"journal_ref": "Open systems and information dynamics 12, No.1, pp. 81-91 (2005)",
"title": "Description of quantum dynamics of open systems based on collision-like models",
"url": "https://arxiv.org/abs/quant-ph/0410161"
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