| Journal: | Brazilian journal of physics |
| Database: | PERIÓDICA |
| System number: | 000389431 |
| ISSN: | 0103-9733 |
| Authors: | Rodríguez Pérez, Sergio1 Novaes, Marcel2 |
| Institutions: | 1Universidade Federal do Rio Grande do Norte, Escola de Ciencias e Tecnologia, Natal, Rio Grande do Norte. Brasil 2Universidade Federal de Uberlandia, Instituto de Fisica, Uberlandia, Minas Gerais. Brasil |
| Year: | 2015 |
| Season: | Oct |
| Volumen: | 45 |
| Number: | 5 |
| Pages: | 532-537 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental, aplicado |
| English abstract | We study orbital entanglement production in a chaotic cavity connected to four single-channel normalmetal leads and one superconducting lead, assuming the presence of time-reversal symmetry and within a random matrix theory approach. The scattered state of two incident electrons is written as the superposition of several two-outgoing quasi-particle components, four of which are orbitally entangled in a left-right bipartition. We calculate numerically the mean value of the squared norm of each entangled component, as functions of the number of channels in the superconducting lead. Its behavior is explained as resulting from the proximity effect. We also study statistically the amount of entanglement carried by each pair of outgoing quasi-particles. When the influence of the superconductor is more intense, the device works as an entangler of electron-hole pairs, and the average entanglement is found to be considerably larger than that obtained without the superconducting lead |
| Disciplines: | Física y astronomía |
| Keyword: | Física de materia condensada, Superconductores, Plomo, Cavidad caótica, Entrelazamiento orbital |
| Keyword: | Physics and astronomy, Condensed matter physics, Superconductors, Lead, Chaotic cavity, Orbital entanglement |
| Full text: | Texto completo (Ver PDF) |
