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Entanglement distribution for a practical quantum-dot-based quantum processor architecture

Spiller, Timothy P., D'Amico, Irene and Lovett, Brendon W. (2007) Entanglement distribution for a practical quantum-dot-based quantum processor architecture. New Journal of Physics. 20. -. ISSN 1367-2630

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Abstract

We propose a quantum dot (QD) architecture for enabling universal quantum information processing. Quantum registers, consisting of arrays of vertically stacked self-assembled semiconductor QDs, are connected by chains of in-plane self-assembled dots. We propose an entanglement distributor, a device for producing and distributing maximally entangled qubits on demand, communicated through in-plane dot chains. This enables the transmission of entanglement to spatially separated register stacks, providing a resource for the realization of a sizeable quantum processor built from coupled register stacks of practical size. Our entanglement distributor could be integrated into many of the present proposals for self-assembled QD- based quantum computation ( QC). Our device exploits the properties of simple, relatively short, spin-chains and does not require microcavities. Utilizing the properties of self-assembled QDs, after distribution the entanglement can be mapped into relatively long-lived spin qubits and purified, providing a flexible, distributed, off-line resource.

Item Type: Article
Copyright, Publisher and Additional Information: © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft. Third parties have the same rights to reuse articles in NJP as described in the Creative Commons Attribution-Non-Commercial-ShareAlike 2.5 license. These open access rights allow third-party users to copy, distribute and display the published version of articles in NJP, and create derivative works, subject to appropriate attribution and non-commercial exploitation.
Keywords: COMPUTATION, CRYSTALS, GROWTH, ARRAYS
Institution: The University of York
Academic Units: The University of York > Physics (York)
Depositing User: Ms Diana Hilmer
Date Deposited: 24 Aug 2007 14:36
Last Modified: 14 Oct 2014 09:29
Published Version: http://dx.doi.org/10.1088/1367-2630/9/1/020
Status: Published
Refereed: Yes
Related URLs:
URI: http://eprints.whiterose.ac.uk/id/eprint/2649

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