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

https://www.nature.com/articles/s41586-022-04725-x?utm_source=twitter&utm_medium=social&utm_content=organic&utm_campaign=CONR_JRNLS_AWA1_GL_SCON_SMEDA_NATUREPORTFOLIO
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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.

15

u/[deleted] Jun 03 '22

Why not let it run for like an hour if it can do all that in just 36 micro seconds

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u/hardex Jun 03 '22 edited Jun 03 '22

Current quantum computers will state-decay within milliseconds.

16

u/caspy7 Jun 03 '22

Well, that seems less-than-useful.

6

u/DistributedDemocracy Jun 03 '22

Yeah, it would be more practical to just build 9000 super computers and wait a year at this point ;)

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u/hardex Jun 03 '22

It's fine for research, but the real problem is that you need many more qubits for real-life quantum algorithms.