Nano Archive

Single-walled carbon nanotube–superconductor entangler: noise correlations and Einstein–Podolsky–Rosen states

Bouchiat, V and Chtchelkatchev, N and Feinberg, D and Lesovik, G B and Martin, T and Torres, J (2003) Single-walled carbon nanotube–superconductor entangler: noise correlations and Einstein–Podolsky–Rosen states. Nanotechnology, 14 (1). pp. 77-85.

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Official URL: http://stacks.iop.org/0957-4484/14/77

Abstract

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.

Item Type:Article
ID Code:668
Deposited By:Prof. Alexey Ivanov
Deposited On:16 Mar 2009 10:41
Last Modified:20 Mar 2009 08:58

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