Quantum memristor: A memory-dependent computational unit

An abstract image meant to evoke a complex electronic processor.

Enlarge (credit score: Donald Jorgensen | Pacific Northwest Nationwide Laboratory)

Quantum computing has come on in leaps and bounds in the previous couple of years. Certainly, as soon as the massive know-how firms like IBM, Microsoft, and Google began displaying an curiosity, I sort of stopped maintaining observe. However, analysis on the essential parts of quantum computing continues and is, for me, extra fascinating than the engineering achievements of business labs (that are nonetheless completely mandatory).

Consistent with my pursuits, a bunch of researchers demonstrated the primary quantum memristor not too long ago. This can be a vital step in bringing a kind of extremely environment friendly neural community to the world of quantum computing with out an eye-watering massive variety of quantum connections.

Memristors and including the quantum

The idea of the memristor dates again to the 1970s, however, for a very long time, it sat like a sock below your washer: forgotten and un-missed. The important concept is that the present that flows by a memristor doesn’t simply rely upon the voltage that’s utilized throughout the terminals but in addition on the historical past of utilized voltage. Bodily implementations of memristors provide nice promise for low-energy computing as a result of they can be utilized to make energy-efficient reminiscence.

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