Switching properties of an arbitrarily excited nonlinear electron-wave directional coupler
نویسنده
چکیده
We theoretically investigate the switching properties of nonlinear electron-wave directional couplers by applying the coupled mode theory. Analytical results for the probability of finding the electron wave in each waveguide, for arbitrary initial occupation of each waveguide, are presented. Our findings reveal that several technologically important cases can be achieved, such as significant or complete electron transfer between the waveguides or trapping of the electron wave in the initial state, depending on the structural parameters of the device. In addition, for specific values of the initial state of the system the important case of symmetry breaking is realized. Key-Words: Electron-wave directional coupler, switching, arbitrary initial conditions, electronic oscillations, self-trapping, symmetry breaking
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