Did they give any numbers on the <i>quality</i> of the qubits? For example, IBM's 20 qubit chip has 2-qubit operations with error rates on the order of 5% [1] (some pairs of qubits are better, some are worse). Quantum supremacy experiments require thousands of operations (tens of layers of parallel operations). Qubits with even a 1% error rate per operation just won't cut it.<p>1: <a href="https://youtu.be/T-8uuq7Izl8?t=26m58s" rel="nofollow">https://youtu.be/T-8uuq7Izl8?t=26m58s</a> "Experimental quantum computing at IBM" [26:58]<p><i>(Disclosure: I work on Google's quantum team.)</i>
I guess taking every branch by default avoids the specter of branch prediction vulnerabilities?<p>(This is me failing my saving throw vs urge to make terrible nerd jokes.)
I assume these are massive like D-Wave's systems? <a href="https://youtu.be/60OkanvToFI?t=392" rel="nofollow">https://youtu.be/60OkanvToFI?t=392</a>