Enhancing coherent transport in a photonic network using controllable decoherence

Biggerstaff, Devon N., Heilmann, Rene, Zecevik, Aidan A., Graefe, 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 . doi:10.1038/ncomms11282

Author Biggerstaff, Devon N.
Heilmann, Rene
Zecevik, Aidan A.
Graefe, Markus
Broome, Matthew A.
Fedrizzi, Alessandro
Nolte, Stefan
Szameit, Alexander
White, Andrew G.
Kassal, Ivan
Title Enhancing coherent transport in a photonic network using controllable decoherence
Journal name Nature Communications   Check publisher's open access policy
ISSN 2041-1723
Publication date 2016-04-15
Sub-type Article (original research)
DOI 10.1038/ncomms11282
Open Access Status DOI
Volume 7
Total pages 6
Place of publication London, United Kingdom
Publisher Nature Publishing Group
Collection year 2017
Language eng
Formatted 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.
Keyword Quantum coherence
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
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