(credit: Wikimedia Commons)
D-Wave, a company based in British Columbia, has announced a new version of its quantum annealer: the D-Wave 2000Q.

As the name suggests, the number of bits has increased from about 1,000 to just over 2,000.

This is, for D-Wave, an important step on its roadmap to world domination.

D-Wave’s approach is to increase the number of qubits come hell, high water, or lack of quantumness.
Luckily, hell has stayed south of the border, winter has prevented flooding, and the associated papers indicate that their new board preserves the quantum behavior of the previous generation.

But under the hood, it appears that D-Wave has made some pretty significant changes to scale up.
Ice cold Ising models
The D-Wave computer is based on a process called annealing.

Annealing involves a series of magnets that are arranged on a grid.

The magnetic field of each magnet influences all the other magnets—together, they flip orientation to arrange themselves to minimize the amount of energy stored in the overall magnetic field. You can use the orientation of the magnets to solve problems by controlling how strongly the magnetic field from each magnet affects all the other magnets.
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