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Quantum Computational Supremacy with Scott Aaronson
In fall 2019, a team at Google made the first-ever claim of "quantum computational supremacy"—that is, a clear quantum speedup over a classical computer for some task—using a 53-qubit programmable superconducting chip called Sycamore. Since then, a group at USTC in China has made additional claims of quantum supremacy, using both superconducting qubits and "Boson Sampling" (a proposal by me and Alex Arkhipov from 2011) with ~70 photons in an optical network. In addition to engineering, these experiments built on a decade of research in quantum complexity theory. This talk will discuss questions like: what exactly were the contrived computational problems that were solved? How does one verify the outputs using a classical computer? And crucially, how confident can we be that the problems are really classically hard?
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