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Advances in OptoElectronics
Volume 2011 (2011), Article ID 893086, 13 pages
http://dx.doi.org/10.1155/2011/893086
Research Article

Controlled On-Chip Single-Photon Transfer Using Photonic Crystal Coupled-Cavity Waveguides

1CREOL, The College of Optics and Photonics, University of Central Florida, Orlando, FL 32826, USA
2NanoScience Technology Center, University of Central Florida, Orlando, FL 32816, USA
3Department of Physics, University of Central Florida, P.O. Box 162385, Orlando, FL 32816, USA

Received 15 June 2010; Revised 21 September 2010; Accepted 1 November 2010

Academic Editor: Martin Cryan

Copyright © 2011 Hubert Pascal Seigneur et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

To the end of realizing a quantum network on-chip, single photons must be guided consistently to their proper destination both on demand and without alteration to the information they carry. Coupled cavity waveguides are anticipated to play a significant role in this regard for two important reasons. First, these structures can easily be included within fully quantum-mechanical models using the phenomenological description of the tight-binding Hamiltonian, which is simply written down in the basis of creation and annihilation operators that move photons from one quasimode to another. This allows for a deeper understanding of the underlying physics and the identification and characterization of features that are truly critical to the behavior of the quantum network using only a few parameters. Second, their unique dispersive properties together with the careful engineering of the dynamic coupling between nearest neighbor cavities provide the necessary control for high-efficiency single-photon on-chip transfer. In this publication, we report transfer efficiencies in the upwards of 93% with respect to a fully quantum-mechanical approach and unprecedented 77% in terms of transferring the energy density contained in a classical quasibound mode from one cavity to another.