Entanglement and decoherence in spin gases
| dc.creator | Calsamiglia, J. | |
| dc.creator | Hartmann, L. | |
| dc.creator | Dür, W. | |
| dc.creator | Briegel, H. -J. | |
| dc.date | 2005-02-01 | |
| dc.date.accessioned | 2026-07-07T06:12:05Z | |
| dc.date.available | 2026-07-07T06:12:05Z | |
| dc.description | We study the dynamics of entanglement in spin gases. A spin gas consists of a (large) number of interacting particles whose random motion is described classically while their internal degrees of freedom are described quantum-mechanically. We determine the entanglement that occurs naturally in such systems for specific types of quantum interactions. At the same time, these systems provide microscopic models for non--Markovian decoherence: the interaction of a group of particles with other particles belonging to a background gas are treated exactly, and differences between collective and non--collective decoherence processes are studied. We give quantitative results for the Boltzmann gas and also for a lattice gas, which could be realized by neutral atoms hopping in an optical lattice. These models can be simulated efficiently for systems of mesoscopic sizes (N ~ 10^5). | |
| dc.description | 7 pages, 2 figures | |
| dc.identifier | https://arxiv.org/abs/quant-ph/0502017 | |
| dc.identifier | http://arxiv.org/abs/quant-ph/0502017 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/92682 | |
| dc.subject | Quantum Physics | |
| dc.title | Entanglement and decoherence in spin gases | |
| dc.type | text |