Single-walled carbon nanotube-superconductor entangler: noise correlations and E

2020-01-08 09:14:58

device state carbon noise nanotube

责任者: Bouchiat, V.;Chtchelkatchev, N.;Feinberg, D.;Lesovik, G.B.;Martin, T.;Torres, J. 单位: Centre de Recherches sur les Tres Basses Temp., CNRS, Grenoble, France 来源出处: Nanotechnology(Nanotechnology (UK)),2003/01/,14(1):77-85 摘要: We propose a device which implements a solid-state nanostructured electron entangler. It consists of a single-walled carbon nanotube connected at both ends to normal state electrodes and coupled in its middle part to a superconducting nanowire. Such a device acts as an electronic beam splitter for correlated electrons originating from the superconductor. We first show that it can be used to detect positive (bosonic-like) noise correlations in a fermionic system. Furthermore, it provides a source for entangled electrons in the two arms of the splitter. To generate entangled electron states, we propose two kinds of set-up based either on spin or energy filters. They respectively consist of ferromagnetic pads and of a system of electrostatic gates which define quantum dots. The fabrication of this device would require state-of-the-art nanofabrication techniques, carbon nanotube synthesis and integration, as well as atomic force microscopy imaging and manipulation 关键词: atomic force microscopy;carbon nanotubes;Cooper pairs;electron device noise;nanotechnology;nanotube devices;nanowires;superconducting devices;superconductive tunnelling;solid-state nanostructured electron entangler;single-walled carbon nanotube;normal state electrodes;superconducting nanowire;electronic beam splitter;positive noise correlations;bosonic-like noise correlations;fermionic system;entangled electrons source;spin filters;energy filters;ferromagnetic pads;electrostatic gates;quantum dots;nanofabrication techniques;carbon nanotube synthesis;atomic force microscopy imaging;AFM manipulation;C