banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
Toward adaptive control of coherent electron transport in semiconductors
Rent this article for
View: Figures


Image of FIG. 1.
FIG. 1.

General configuration for ACCENTS including injection, detection, and adaptive closed-loop feedback control. The wires from the variable voltage source connect to individual pixelated surface gates with sufficient density and small size to create a desired scattering subsurface potential in the test bed material. A possible test bed design for the ACCENTS material is shown in Fig. 2.

Image of FIG. 3.
FIG. 3.

Scattering with a single rhomboid shaped potential structure having two concave aft faceted features. The potential is flat with Gaussian falloff of length scale . The left panel shows a cross section along the line to illustrate this. In the right panel, as well as the following figures, the square modulus of the wave function and the potential are shown as contour lines. The final wave packet is at . The percentages refer to the probability density contributions from the localized packet features; the same labeling is used in Figs. 4–6.

Image of FIG. 4.
FIG. 4.

Scattering of an incoming Gaussian wave packet by two rhomboid shaped potentials into multiple wave packet components with indicated probability density contributions at the final time . The small dark oval inside the second scattering barrier corresponds to a tiny portion of the wave function still located inside the potential at the final time . The harmonic noise visible in the final wave packets is an artifact of the contour line drawing algorithm.

Image of FIG. 5.
FIG. 5.

Scattering from an octagonal faceted potential having concave features resulting in eight primary components of the final wave packet with probability distribution percentages ranging from 9.6% to 14.4% as indicated at time . The structure superimposed on the potential is part of the final wave function at time .

Image of FIG. 6.
FIG. 6.

Scattering from a featureless distorted circular potential into single final transmitted and reflected components at time . The structure inside the potential represents pieces of the wave packet that have not yet escaped.

Image of FIG. 2.
FIG. 2.

A possible configuration proposed as a test bed for ACCENTS: A variety of constructs exists to create an adjustable surface voltage array and for the subsurface materials. Here a high density array of metal surface dots is shown that may be individually connected via nanowires to a variable voltage regulator as shown in Fig. 1. The broken nature of the surface pixels is used to indicate that a wide variety of arrays is possible, including simpler arrangements at likely reduced spatial resolution.


Article metrics loading...


Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Toward adaptive control of coherent electron transport in semiconductors