What Is the Zephyr Topology?

D-Wave is currently developing its next-generation QPU with the Zephyr topology: qubits are “oriented” vertically or horizontally, as in Chimera and Pegasus, and are shifted and connected with three coupler types as in Pegasus, but this new graph achieves higher nominal length (16) and degree (20). A qubit in the Zephyr topology has sixteen internal couplers connecting it to orthogonal qubits and two external couplers and two odd couplers connecting it to similarly aligned qubits.

Prototypes of the next-generation QPU are available in Leap to showcase this new topology. 


For more information, see:

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