# Tag Info

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### When and where was the first use of the term Chimera?

The earliest non-internal reference I can find is in NIPS 2009 from a Google/D-Wave effort1. You'll notice that the two Choi papers, in addition to not using the term "Chimera", do not describe a ...

### What is D-Wave's "Pegasus" architecture?

Pegasus is the first fundamental change in D-Wave's architecture since the D-Wave One. The D-Wave Two, 2X, and 2000Q all used the "Chimera" architecture, which consisted of unit cells of $K_{4,4}$ ...
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### Why did D-Wave choose the Chimera graph the way they did?

You are right that $K_{3,3}$ is non-planar, but as you said yourself, a larger $k$ is much better. If they could do $K_{1000,1000}$ that would be nice, because each qubit could be coupled to 1002 ...
• 12.5k

### Why did D-Wave choose the Chimera graph the way they did?

user1271772's answer is entirely correct. I was going to comment with additional information to help answer nippon's question, but I just created this account and apparently there's a reputation ...