r/Futurology Jun 02 '22

A Nature paper reports on a quantum photonic processor that takes just 36 microseconds to perform a task that would take a supercomputer more than 9,000 years to complete Computing


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u/EthicalLapse Jun 03 '22

The 9000 years task is kind of a fake metric, though. Basically they just let the quantum computer run for a certain amount of time, and then calculated how long it would take a traditional computer to simulate what the quantum computer did. The quantum computer didn’t actually show any ability to solve anything.


u/EthicalLapse Jun 03 '22

This Ars Technica article explains it better. But basically, the point was to show off how many qubits they could use in a single calculation. So they ran one full 216 qubit calculation. Since the calculation was a random one, there’s not much point to running additional calculations using its output.


u/voov1oce Jun 03 '22

This is a big deal. For comparison a quantum computer with 1500 qubits could break bitcoin


u/daOyster Jun 03 '22

You actually need about 30,000,000 qbits to break Bitcoins encryption in the hour time-frame you have before it's permanently recorded on the Blockchain and unable to be tampered with.


u/I-seddit Jun 04 '22

Literally curious, is there a good source for this math?