Quantum Supremacy Using a Programmable Superconducting Processor

Re:Quantum Supremacy Using a Programmable Superconducting Pr... by htfu on Wednesday October 23, 2019 @09:18AM (#21334300)

Thanks for the breakdown! But so in other words, it’s still not all that far off that (realistic amounts of) disk storage can’t contain the state and scaling reverts to how they assert it.

[ Parent | on HN ]

Re:Quantum Supremacy Using a Programmable Superconducting Pr... by sanxiyn on Wednesday October 23, 2019 @09:27AM (#21334383)

Indeed. It's just that 2^53 bytes (about 10 petabytes) of storage is in fact available, so you need a few more qubits to exclude that.

[ Parent | on HN ]

Re:Quantum Supremacy Using a Programmable Superconducting Pr... by AlanYx on Wednesday October 23, 2019 @12:01PM (#21335952)

It's not quite that efficient... IBM's arxiv paper says "64 PiB of disk space are required for 53-qubit circuits, and 128 PiB for 54-qubit circuits".

Summit has 250 PiB of total storage currently, so it would seem that a 55-qubit simulation is almost within reach by IBM's method as well.

[ Parent | on HN ]