Simulation of Nonradiative Energy Transfer in Photosynthetic Systems Using a Quantum Computer

Figure 3

Uncorrelated random fluctuations applied to donor and acceptor’s excited state energies, and . Each molecule is affected by one fluctuator, which generates a telegraph-type classical noise. The fluctuators switch randomly between the positive and negative values at a given fixed rate, so that the periods of time when the molecule energy is constant, or , are random. is the coupling strength between the molecules that can be seen as the rate of hoppings between these fluctuating energy levels.