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Enhancing coherent transport in a photonic network using controllable decoherence

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Biggerstaff, Devon N., Heilmann, René, Zecevik, Aidan A., Gräfe, Markus, Broome, Matthew A., Fedrizzi, Alessandro, Nolte, Stefan, Szameit, Alexander, White, Andrew G. and Kassal, Ivan (2016) Enhancing coherent transport in a photonic network using controllable decoherence. Nature Communications, 7 (1). 11282. doi:10.1038/ncomms11282

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Official URL: http://dx.doi.org/10.1038/ncomms11282

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Abstract

Transport phenomena on a quantum scale appear in a variety of systems, ranging from photosynthetic complexes to engineered quantum devices. It has been predicted that the efficiency of coherent transport can be enhanced through dynamic interaction between the system and a noisy environment. We report an experimental simulation of environment-assisted coherent transport, using an engineered network of laser-written waveguides, with relative energies and inter-waveguide couplings tailored to yield the desired Hamiltonian. Controllable-strength decoherence is simulated by broadening the bandwidth of the input illumination, yielding a significant increase in transport efficiency relative to the narrowband case. We show integrated optics to be suitable for simulating specific target Hamiltonians as well as open quantum systems with controllable loss and decoherence.

Item Type: Journal Article
Subjects: Q Science > QC Physics
Divisions: Faculty of Science, Engineering and Medicine > Science > Physics
Library of Congress Subject Headings (LCSH): Quantum theory, Wave guides , Hamiltonian systems, Coherent states
Journal or Publication Title: Nature Communications
Publisher: Nature Publishing Group
ISSN: 2041-1723
Official Date: 15 April 2016
Dates:
DateEvent
15 April 2016Published
8 March 2016Accepted
Volume: 7
Number: 1
Article Number: 11282
DOI: 10.1038/ncomms11282
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
CE110001013Australian Research Councilhttp://dx.doi.org/10.13039/501100000923
CE110001027Australian Research Councilhttp://dx.doi.org/10.13039/501100000923
03Z1HN31 Germany.‏ Bundesministerium für Bildung und Forschunghttp://viaf.org/viaf/132864470
NO462/6-1[DFG] Deutsche Forschungsgemeinschafthttp://dx.doi.org/10.13039/501100001659
SZ 276/9-1[DFG] Deutsche Forschungsgemeinschafthttp://dx.doi.org/10.13039/501100001659
SZ 276/7-1[DFG] Deutsche Forschungsgemeinschafthttp://dx.doi.org/10.13039/501100001659
1157-127.14/2011German-Israeli Foundation for Scientific Research and Developmenthttp://dx.doi.org/10.13039/501100001736
DE130100240Australian Research Councilhttp://dx.doi.org/10.13039/501100000923
DE140100433Australian Research Councilhttp://dx.doi.org/10.13039/501100000923

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