Figure 3

Quantum transport in the FMO complex. We take two-site and three-site subsystems for examples and show how the amount of quantum transport (α: green, blue, and red; β: purple) at temperatures of 77 K (solid) and 298 K (dash) varies with time (t) therein. A Lindblad master equation is used to model the dynamics of subsystem expressed in the site basis⁶⁶, including the coherent evolution, the dissipative recombination of exciton (χ _AD) with a rate \(\sim 5\times {10}^{-4}\) ps⁻¹ for all the sites, the dephasing interaction with the environment (χ _PD), and the trapping of exciton in the reaction centre through site 3 with a rate 6 ps⁻¹. See Methods. The dephasing rates 2.1 ps⁻¹ and 9.1 ps⁻¹ corresponding to 77 K and 298 K, respectively, are considered.