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Vibration enhanced quantum transport | | F. L. Semião
; K. Furuya
; G. J. Milburn
; | | Date: |
10 Sep 2009 | | Abstract: | In this paper, we study the role of a collective vibrational motion in the
phenomenon of electronic energy transfer (EET) between chromophores with
different electronic transition frequencies. Previous experimental work on EET
in conjugated polymer samples has suggested that the common structural
framework of the macromolecule introduce correlations in the energy gap
fluctuations which cause coherent EET. We present a simple model describing the
coupling between the chromophores and a common vibrational mode, and find that
vibration can indeed lead to an enhancement in the transport of excitations
across the quantum network. Furthermore, in our model phase information is
partially retained in the transfer process from a donor to an acceptor, as
experimentally demonstrated in the conjugated polymer system. Consequently,
this mechanism of vibration enhanced quantum transport might find applications
in quantum information transfer of qubit states or entanglement. | | Source: | arXiv, 0909.1846 | | Services: | Forum | Review | PDF | Favorites | |
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