Energy transfer in quantum molecular chain – Two models of inhomogeneity

We study a linear chain of oscillators with inhomogeneity in their interactions phonon bath. In previous work on the Markovian master equation system, we investigated model which difference site-phonon coupling between adjacent is same throughout chain. Here look into another are coupled to bath alternating strength at successive sites. Whereas first all exciton modes connected, second they pairs that not connected each other. Owing this special structure coupling, excitation numbers different can be solved exactly steady state. model, minima profile site basis occur edges chain, whereas maxima edges. The energy transfer efficiency affected by source power independent it. A distinct feature sink placed middle able distinguish chains even and odd number sites higher than Therefore, it reveals discrete nature limit very long when discreteness less evident, efficiencies approach