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Playing ping-pong with single electrons

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Uploaded on Sep 16, 2011

Animated illustration in cross section of a sound wave (surface acoustic wave) capturing an electron from a well (quantum dot) and transferring it to a second dot. The electron can be transferred back and forth many times, rather like a ball in a game of ping-pong. See http://www.sp.phy.cam.ac.uk/SPWeb/res... .

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