Quantum Supremacy Using a Programmable Superconducting Processor
Interesting refutation by IBM here:<p><i>In the preprint, it is argued that their device reached “quantum supremacy” and that “a state-of-the-art supercomputer would require approximately 10,000 years to perform the equivalent task.” We argue that an ideal simulation of the same task can be performed on a classical system in 2.5 days and with far greater fidelity.</i><p><a href="https://www.ibm.com/blogs/research/2019/10/on-quantum-supremacy/" rel="nofollow">https://www.ibm.com/blogs/research/2019/10/on-quantum-suprem...</a>