Relaxation due to random collisions with a many-qudit environment
| dc.creator | Gennaro, Giuseppe | |
| dc.creator | Benenti, Giuliano | |
| dc.creator | Palma, G. Massimo | |
| dc.date | 2008-11-21 | |
| dc.date.accessioned | 2026-07-07T12:38:06Z | |
| dc.date.available | 2026-07-07T12:38:06Z | |
| dc.description | We analyze the dynamics of a system qudit of dimension mu sequentially interacting with the nu-dimensional qudits of a chain playing the ore of an environment. Each pairwise collision has been modeled as a random unitary transformation. The relaxation to equilibrium of the purity of the system qudit, averaged over random collisions, is analytically computed by means of a Markov chain approach. In particular, we show that the steady state is the one corresponding to the steady state for random collisions with a single environment qudit of effective dimension nu_e=nu*mu. Finally, we numerically investigate aspects of the entanglement dynamics for qubits (mu=nu=2) and show that random unitary collisions can create multipartite entanglement between the system qudit and the qudits of the chain. | |
| dc.description | 7 pages, 6 figures | |
| dc.identifier | https://arxiv.org/abs/0811.3581 | |
| dc.identifier | http://arxiv.org/abs/0811.3581 | |
| dc.identifier | Phys. Rev. A 79, 022105 (2009) | |
| dc.identifier | doi:10.1103/PhysRevA.79.022105 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/218640 | |
| dc.subject | Quantum Physics | |
| dc.title | Relaxation due to random collisions with a many-qudit environment | |
| dc.type | text |