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Entangled photon pairs from a quantum dot source

Stevenson, R. M. and Young, R. J. and Atkinson, P. and Cooper, K. and Ritchie, D. A. and Shields, A. J. (2006) Entangled photon pairs from a quantum dot source. Physica Status Solidi (C), 3 (11). pp. 3697-3701. ISSN 1610-1634

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Abstract

We present the results of recent experiments designed to manipulate the splitting in quantum dots, to eradicate the which-path information that prevents entangled photon emission. We demonstrate that dots with splitting within the homogeneous linewidth can be grown directly by carefully controlling the thickness of the dot layer. Polarization dependent correlation measurements on these dots show characteristic features of entanglement, only present for dots with small splitting. Our results indicate that for the first time, we have observed triggered entangled photon pair emission from a quantum dot. The ability to trigger the emission of just one photon pair has advantages over other schemes to generate entangled photons, including scalability of the applications. Finally, we note that the device, once optimized, could be implemented by a simple LED-like structure. (c) 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Item Type: Article
Journal or Publication Title: Physica Status Solidi (C)
Uncontrolled Keywords: 03.67.Mn ; 78.55.Cr ; 78.67.Hc
Subjects: Q Science > QC Physics
Departments: Faculty of Science and Technology > Physics
ID Code: 54975
Deposited By: ep_importer_pure
Deposited On: 07 Jun 2012 14:12
Refereed?: Yes
Published?: Published
Last Modified: 26 Jul 2012 20:32
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/54975

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