9-13 July 2012
Africa/Johannesburg timezone
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Decoherence-assisted transport in quantum networks

Presented by Ms. Adriana MARAIS, Dr. Ilya SINAYSKIY on 11 Jul 2012 from 17:30 to 17:50
Type: Oral Presentation
Session: Theoretical
Track: Track G - Theoretical and Computational Physics

Abstract

The dynamics of a quantum network under the influence of decoherence is studied. This work is a generalisation of previous research on decoherence-assisted transport in a dimer system [I. Sinayskiy, A. Marais, F. Petruccione and A. Ekert, Phys. Rev. Lett. 108, 020602 (2012)]. The model under investigation consists of a homogenous fully connected quantum network in contact with an environment of spins. Exact analytical expressions for the transition probabilities are obtained. It is shown that there exist well-defined ranges of parameters for which decoherent interactions with the environment assist energy transfer in the quantum network. This model of decoherence assisted energy transfer is applied to energy transfer in the Fenna-Matthews-Olson complex.

Award

Yes

Level

PhD

Supervisor

Prof. Francesco Petruccione (petruccione@ukzn.ac.za)

Paper

Yes

Primary authors

  • Ms. Adriana MARAIS Quantum Research Group, School of Chemistry and Physics and National Institute for Theoretical Physics, University of KwaZulu-Natal, Durban, 4001, South Africa
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Co-authors

  • Dr. Ilya SINAYSKIY Quantum Research Group, School of Chemistry and Physics and National Institute for Theoretical Physics, University of KwaZulu-Natal, Durban, 4001, South Africa
  • Prof. Francesco PETRUCCIONE Quantum Research Group, School of Chemistry and Physics and National Institute for Theoretical Physics, University of KwaZulu-Natal, Durban, 4001, South Africa
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