Professor Daniel Prober and Professor Robert Schoelkopf from the Department of Applied Physics, have created an ultrafast, single-electron transistor which could lead to the development of "quantum" computers with supercomputer powers and the size of a thumbtack.  The breakthrough involves inducing a tiny part of the transistor to "resonate" with the arrival of each electron.  That resonance creates a way to track each electron and also gives an extra push to the electrons as they are moving through the switch, making it 1,000 times faster than any previous device.   The first applications of the device will likely be in astronomy and microscopy.