© Niels Paul Bethe, SYNC – Audiovisual Design
Circuits that calculate with spin waves instead of electrons should become an energy-efficient addition to semiconductor electronics.
With a courageous push of the power button, the old computer comes to life: the fan howls, a beep sounds. Then the typical mechanical bubbling of the hard drive penetrates from the inside of the plastic housing, the read head frantically moving over the surface of the magnetic metal disc to retrieve the stored data.
Hard disk storage makes use of a particle-physical property of the electrons that could enable a completely new, more efficient form of computing in the future: spin. The spin of an electron…
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