Off shell: 2512O.001.v1

[Original paper]
Non-adiabatic relaxation process that lies behind the adiabatic relaxation of dressed-photon–phonon transfer

M. Ohtsu, E. Segawa, K. Yuki, and S. Saito


keywords:
dressed photon, phonon, quantum walk, random walk, energy transfer


Abstract

This paper reports the results of numerical calculations based on a quantum walk (QW) model in order to analyze the temporal behavior of the dressed-photon–phonon (DPP) transfer. Since a random walk (RW) process lies behind the QW process, the time evolution operator of the interpolation model is used by introducing a probability p. The results reveal that: The crossover time xt decreases with increasing p and /Jχ (the ratio between the DP hopping energy Jand the DP-phonon coupling energy χ). In contrast, th slope RWS of the curve for the RW process increases. The slope QWS of the curve for the QW process increases with increasing /Jχ, which indicates that a part of the adiabatic relaxion energy is apt to be spontaneously converted to the non-adiabatic relaxation energy. In the case of /1Jχ=, the nutation cycle is long and the slopes are small, which is advantageous for operating novel nanometer-sized devices.

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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