| Texto completo | |
| Autor(es): |
de Oliveira, Thiago R.
[1]
Número total de Autores: 1
|
| Afiliação do(s) autor(es): | [1] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083970 Campinas, SP - Brazil
Número total de Afiliações: 1
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Physical Review A; v. 80, n. 2, p. 022331, 2009. |
| Citações Web of Science: | 5 |
| Resumo | |
Exploring an analytical expression for the convex roof of the pure state squared concurrence for rank 2 mixed states the entanglement of a system of three particles under decoherence is studied, using the monogamy inequality for mixed states and the residual entanglement obtained from it. The monogamy inequality is investigated both for the concurrence and the negativity in the case of local independent phase damping channel acting on generalized Greenberger-Horne-Zeilinger states of three particles and the local independent amplitude damping channel acting on generalized |W >=|001 >+|010 >+|100 > state of three particles. It is shown that the bipartite entanglement between one qubit and the rest has a qualitative similar behavior to the entanglement between individual qubits, and that the residual entanglement in terms of the negativity cannot be a good entanglement measure for mixed states, since it can increase under local decoherence. (AU) | |
| Processo FAPESP: | 08/03557-8 - Estudo do emaranhamento em sistemas de muitas partículas |
| Beneficiário: | Thiago Rodrigues de Oliveira |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |