Off shell: 2510R.001.v1
[Review paper]
Quantum walk and random walk behaviors ofdressed-photon–phonon transfers
Motoichi Ohtsu
keywords: dressed-photon-phonon, quantum walk, random walk, energy transfer
Abstract
This paper reviews measured results on the temporal variation behavior of the dressed photon (DP) transfers between nanometer-size particles (NPs). The NPs are illuminated with a short optical pulse, and the resulting behavior of the emitted photoluminescence (PL) intensity is evaluated. Even after the optical pulse is turned off, the PL intensity exhibits nutation within a short time span. The envelope intensity of the nutation decreases due to adiabatic and non-adiabatic processes. They are described by using a quantum walk (QW) model and a random walk (RW) model, respectively. It is revealed that the values of several relevant quantities in these models must be adjusted in an appropriate manner to clearly observe the DP transfer features. The rate of conversion from the adiabatically dissipated energy to the non-adiabatically dissipated energy must also be adjusted. An antenna system composed of photosynthetic bacteria is presented, suggesting that a future direction of DP research is to draw a universal physical picture of DP transfers that are commonly found in nature.
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Copyright
The copyright holder for this preprint is the author. It is made available under a CC-BY-NC-ND 4.0 Internationallicense .
Research Origin for Dressed Photon,3-13-19 Moriya-cho, Kanagawa-ku, Yokohama, Kanagawa 221-0022 Japan
