Evolution of pairwise entanglement in a coupled n-body system
| dc.creator | Pineda, Carlos | |
| dc.creator | Seligman, Thomas H. | |
| dc.date | 2005-03-21 | |
| dc.date | 2005-04-04 | |
| dc.date.accessioned | 2026-07-07T08:45:56Z | |
| dc.date.available | 2026-07-07T08:45:56Z | |
| dc.description | We study the exact evolution of two non-interacting qubits, initially in a Bell state, in the presence of an environment, modeled by a kicked Ising spin chain. Dynamics of this model range from integrable to chaotic and we can handle numerics for a large number of qubits. We find that the entanglement (as measured by concurrence) of the two qubits has a close relation to the purity of the pair, and follows an analytic relation derived for Werner states. As a collateral result we find that an integrable environment causes quadratic decay of concurrence, while a chaotic environment causes linear decay. | |
| dc.description | 4 pages, 4 figures; RevTex4, Fixed typo in Eq. 3 and in concurrence definition | |
| dc.identifier | https://arxiv.org/abs/quant-ph/0503177 | |
| dc.identifier | http://arxiv.org/abs/quant-ph/0503177 | |
| dc.identifier | Phys. Rev. A 73(1), 012305, (2006) | |
| dc.identifier | doi:10.1103/PhysRevA.73.012305 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/143122 | |
| dc.subject | Quantum Physics | |
| dc.title | Evolution of pairwise entanglement in a coupled n-body system | |
| dc.type | text |