Detecting nonlocal Cooper pair entanglement by optical Bell inequality violation

Article

关键词: SINGLE QUANTUM-DOT;    SPIN;    EFFICIENCY;    STATES;    NOISE;   

DOI  :  10.1103/PhysRevB.91.094516

来源: SCIE

【 摘 要 】

Based on the Bardeen-Cooper-Schrieffer 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 photon pairs produced can be used to violate a Bell inequality, unambiguously demonstrating the entanglement of the split Cooper pairs.

【 授权许可】

Free