Controlling the phase locking of stochastic magnetic bits for ultra-low power computation

What is it about?

We show that adding an appropriate level of noise induces the synchronization of a nanomagnetic oscillator to a weak electrical signal. Noise allows to achieve synchronization of nanomagnetic oscillators at an energy cost 100 times lower than traditional techniques. Furthermore it allows to synchronize much smaller nanomagnetic oscillators. We perform experiments and develop an analytical model to describe them.

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Why is it important?

Networks of synchronized oscillators can perform cognitive tasks such as pattern recognition and classification. In consequence, there is a lot of effort to achieve synchronization of nano-oscillators. Nanomagnetic oscillators are specifically targeted as they are promising candidates for the implementation of many novel computing circuits. But synchronization of nanomagnetic oscillators consumes a lot of energy. Here we propose a method to achieve their synchronization at low energy cost.

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