Google claims to have reached quantum supremacy

The paper was called "Quantum supremacy using a programmable superconducting processor" and was available at [1] but is now removed.

I also found a partial abstract [2]: "The tantalizing promise of quantum computers is that certain computational tasks might be executed exponentially faster on a quantum processor than on a classical processor. A fundamental challenge is to build a high-fidelity processor capable of running quantum algorithms in an exponentially large computational space. Here, we report using a processor with programmable superconducting qubits to create quantum states on 53 qubits, occupying a state space 2^53 ~ 10^16. Measurements fro…"

Original plan was to have 72 qubits (as noted in the FT article) but was downsized to 53 for some reason. Original reporting on the 72-qubit plan here [3].

[1] (dead link) https://ntrs.nasa.gov/search.jsp?R=20190030475

[2] https://agenparl.eu/quantum-supremacy-using-a-programmable-s...

[3] https://www.technologyreview.com/s/610274/google-thinks-its-...

If this is true this is a revolution. If this is false this is usual quantum bullshit to justify funding. Can we agree on the truth value? The calculus tested has not at all been explained on the archive which is ridiculous.

This works if you use Firefox:

https://github.com/iamadamdev/bypass-paywalls-firefox

Someone’s about to get a stern talking to on Monday it seems.

I wonder though, if it was someone from NASA or from Google that made the mistake of uploading the paper earlier than they should have.