Patrick Rebentrost et al 2009 New J. Phys. 11 033003 doi:10.1088/1367-2630/11/3/033003
Environment-assisted quantum transport
Patrick Rebentrost1, Masoud Mohseni1, Ivan Kassal1, Seth Lloyd2 and Alán Aspuru-Guzik1,3
Show affiliationsTransport phenomena at the nanoscale are of interest due to the presence of both quantum and classical behavior. In this work, we demonstrate that quantum transport efficiency can be enhanced by a dynamical interplay of the system Hamiltonian with pure dephasing induced by a fluctuating environment. This is in contrast to fully coherent hopping that leads to localization in disordered systems, and to highly incoherent transfer that is eventually suppressed by the quantum Zeno effect. We study these phenomena in the Fenna–Matthews–Olson protein complex as a prototype for larger photosynthetic energy transfer systems. We also show that the disordered binary tree structures exhibit enhanced transport in the presence of dephasing.
- PACS
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87.15.M- Spectra of biomolecules
03.65.Yz Decoherence; open systems; quantum statistical methods
- Subjects
- Dates
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Issue 3 (March 2009)
Received 28 October 2008
Published 3 March 2009
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Environment-assisted quantum transport
Patrick Rebentrost et al 2009 New J. Phys. 11 033003
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