Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/85377
Title: Davydov-Ansatz for Landau-Zener-Stueckelberg-Majorana transitions in an environment : tuning the survival probability via number state excitation
Authors: Werther, Michael
Grossmann, Frank
Huang, Zhongkai
Zhao, Yang
Keywords: Open Quantum Systems
Engineering::Materials
Time-dependent Schrodinger Equation
Issue Date: 2019
Source: Werther, M., Grossmann, F., Huang, Z., & Zhao, Y. (2019). Davydov-Ansatz for Landau-Zener-Stueckelberg-Majorana transitions in an environment : tuning the survival probability via number state excitation. The Journal of Chemical Physics, 150(23), 234109-. doi:10.1063/1.5096158
Series/Report no.: The Journal of Chemical Physics
Abstract: We theoretically investigate transitions in a two-level system, which are induced by a sweep through an avoided crossing in the presence of coupling to a single, excited bosonic mode. This allows us to propose an initial number-state bosonic excitation as a new possible control parameter for the survival probability at long times. The expansion of number states in terms of coherent states centered around points on a circle in phase space makes a multi-Davydov-Ansatz the method of choice to perform the required numerical calculations. It is revealed that the starting time of the transition greatly affects the final transition probabilities. In addition, we found that the mixing angle, which is tuning between the diagonal and off-diagonal coupling, is decisive for the ability to control the transition via number state excitation. For a mixing angle of π/4, we found the maximal effect of number state excitation on the transition probability.
URI: https://hdl.handle.net/10356/85377
http://hdl.handle.net/10220/49217
ISSN: 0021-9606
DOI: 10.1063/1.5096158
Rights: © 2019 The Author(s). All rights reserved. This paper was published by AIP Publishing in The Journal of Chemical Physics and is made available with permission of The Author(s).
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MSE Journal Articles

Google ScholarTM

Check

Altmetric


Plumx

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.