Stefan Mileschin

The cat is out of the box Dave

IBM researchers have managed to implement machine learning on an IBM quantum processor

Although the proof-of-concept demonstration did not involve practical tasks, the team hopes that scaling-up the algorithms to run on larger quantum systems could give machine learning a boost.

AI running quantum computers is a holy grail of programming. If anyone pulls it off it will create computers which can calculate the existence of rice pudding, or God to 22 decimal places before it is even switched on.

Many machine learning algorithms are “kernel methods”, which determine similarities between patterns. The strategy is to transform the data–pixels in a digital image.

In February, Maria Schuld and Nathan Killoran published a paper in Physical Review Letters that describes two approaches for using quantum computers in machine learning.

Schuld and Killoran work for Xanadu, a Toronto-based company that builds optical quantum-computing chips and designs software for quantum computers.

Working independently, Kristan Temme and physicists at IBM have proposed similar strategies and have implemented them using a very basic quantum computer. Temme and colleagues describe their work in Nature.

One cunning plan involves using a quantum computer as a hardware add-on to a conventional machine learning system. In this scenario, data is sent to a quantum computer to be classified. Similarity data are then returned to the conventional system, which performs the machine learning.

The other method involves performing the learning on a quantum computer, with the assistance of a classical computer.

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