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Generation of Einstein-Podolsky-Rosen pairs and interconversion of static and flying electron spin qubits.

Giavaras, Georgios and Jefferson, J. H. and Fearn, M. and Lambert, Colin J. (2007) Generation of Einstein-Podolsky-Rosen pairs and interconversion of static and flying electron spin qubits. Physical Review B, 76 (24). ISSN 1550-235X

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Abstract

We propose a method of generating fully entangled electron spin pairs using an open static quantum dot and a moving quantum dot, realized by the propagation of a surface acoustic wave (SAW) along a quasi-one-dimensional channel in a semiconductor heterostructure. In particular, we consider a static dot (SD) loaded with two interacting electrons in a singlet state and demonstrate a mechanism which enables the moving SAW dot to capture and carry along one of the electrons, hence yielding a fully entangled static-flying pair. We also show how with the same mechanism we can load the SD with one or two electrons which are initially carried by a SAW-induced dot. The feasibility of realizing these ideas with existing semiconductor technology is demonstrated and extended to yield flying or static pairs that are fully entangled and arbitrary interconversion of static and flying electron spin qubits.

Item Type: Article
Journal or Publication Title: Physical Review B
Subjects: Q Science > QC Physics
Departments: Faculty of Science and Technology > Physics
ID Code: 18686
Deposited By: ep_ss_importer
Deposited On: 28 Oct 2008 15:21
Refereed?: Yes
Published?: Published
Last Modified: 09 Apr 2014 20:22
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/18686

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