Influence of a Superconducting Lead on Orbital Entanglement Production in Chaotic Cavities
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| Format: | Artículo científico |
| Langue: | en |
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Sociedade Brasileira de Física
2015
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| _version_ | 1876485556214431744 |
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| author | Sergio Rodríguez-Pérez |
| author_facet | Sergio Rodríguez-Pérez |
| contents | Influence of a Superconducting Lead on Orbital Entanglement Production in Chaotic Cavities Sergio Rodríguez-Pérez Marcel Novaes Física, Astronomía y Matemáticas Chaotic cavity Superconductor Orbital entanglement 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. 2015 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46442559005 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.5 Vol.45 |
| format | Artículo científico |
| id | redalyc_46442559005 |
| institution | Redalyc |
| language | en |
| publishDate | 2015 |
| publisher | Sociedade Brasileira de Física |
| spellingShingle | Influence of a Superconducting Lead on Orbital Entanglement Production in Chaotic Cavities Sergio Rodríguez-Pérez Física, Astronomía y Matemáticas Chaotic cavity Superconductor Orbital entanglement Influence of a Superconducting Lead on Orbital Entanglement Production in Chaotic Cavities Sergio Rodríguez-Pérez Marcel Novaes Física, Astronomía y Matemáticas Chaotic cavity Superconductor Orbital entanglement 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. 2015 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46442559005 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.5 Vol.45 |
| title | Influence of a Superconducting Lead on Orbital Entanglement Production in Chaotic Cavities |
| topic | Física, Astronomía y Matemáticas Chaotic cavity Superconductor Orbital entanglement |
| url | https://www.redalyc.org/articulo.oa?id=46442559005 |