Schematic illustration of the experimental setup that was used to measure the flow of information. (IMAGE)
Caption
Teflon objects (orange cylinders) were placed in a waveguide with a rectangular cross-section. Then, an electromagnetic signal (blue wavefront) was injected from the right to extract information about the metallic cuboid shown in gray. By measuring the wave field in the area indicated in red, the researchers could show how information is generated and transported by an electromagnetic signal. For example, the flow of information about the horizontal position of the cuboid is shown in the inset at the bottom right (blue arrows). One sees that information is generated on the cuboid's right-hand side and then transported to the right towards the opening of the waveguide.
Credit
TU Wien
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Original content