Detecting nonlocal Cooper pair entanglement by optical Bell inequality violation

Autor:	Nigg, Simon E., Tiwari, Rakesh P., Walter, Stefan, Schmidt, Thomas L.
Rok vydání:	2014
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics Condensed Matter - Superconductivity
Zdroj:	Phys. Rev. B 91, 094516 (2015)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevB.91.094516
Popis:	Based on the Bardeen Cooper Schrieffer (BCS) theory of superconductivity, the coherent splitting of Cooper pairs from a superconductor to two spatially separated quantum dots has been predicted to generate nonlocal pairs of entangled electrons. In order to test this hypothesis, we propose a scheme to transfer the spin state of a split Cooper pair onto the polarization state of a pair of optical photons. We show that the produced photon pairs can be used to violate a Bell inequality, unambiguously demonstrating the entanglement of the split Cooper pairs. Comment: 11 pages, 9 figures, v3 with added references
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1411.3945 Zobrazit plný text záznamu View this record from Arxiv