Numerical evidence for robustness of environment-assisted quantum transport

A. Shabani, M. Mohseni, H. Rabitz, and S. Lloyd
Phys. Rev. E 89, 042706 – Published 15 April 2014

Abstract

Recent theoretical studies show that decoherence process can enhance transport efficiency in quantum systems. This effect is known as environment-assisted quantum transport (ENAQT). The role of ENAQT in optimal quantum transport is well investigated; however, it is less known how robust ENAQT is with respect to variations in the system or its environment characteristic. Toward answering this question, we simulated excitonic energy transfer in Fenna-Matthews-Olson photosynthetic complex. We found that ENAQT is robust with respect to many relevant parameters of environmental interactions and Frenkel-exciton Hamiltonians, including reorganization energy, bath-frequency cutoff, temperature, initial excitations, dissipation rate, trapping rate, disorders, and dipole moments orientations. Our study suggests that the ENAQT phenomenon can be exploited in robust design of highly efficient quantum transport systems.

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  • Received 22 December 2013

DOI:https://doi.org/10.1103/PhysRevE.89.042706

©2014 American Physical Society

Authors & Affiliations

A. Shabani1,*, M. Mohseni2,*, H. Rabitz1, and S. Lloyd3

  • 1Department of Chemistry, Princeton University, Princeton, New Jersey 08544 USA
  • 2Center for Excitonics, Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 USA
  • 3Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 USA

  • *Current address: Google Inc., 340 Main St, Venice, CA 90291.

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Vol. 89, Iss. 4 — April 2014

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