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Re:Turn down the quantum volume by kaiabwpdjqn on Thursday March 05, 2020 @08:53PM (#22500373)
can you give an example of a linear programming task that is not currently practical to solve on classical computers but could become so with a huge speed up?
Re:Turn down the quantum volume by alex_anglin on Thursday March 05, 2020 @09:46PM (#22500597)
Simulated annealing[1] versus Quantum annealing[2], though it’s not there yet practically speaking as I understand it.

[1] https://en.wikipedia.org/wiki/Simulated_annealing

[2] https://en.wikipedia.org/wiki/Quantum_annealing?wprov=sfti1

Re:Turn down the quantum volume by kragen on Thursday March 05, 2020 @10:17PM (#22500719)
Simulated annealing is not a linear programming problem!
Re:Turn down the quantum volume by MrK93 on Thursday March 05, 2020 @09:40PM (#22500579)
Routing, TSP, scheduling, they all benefit from huge speed ups.
Re:Turn down the quantum volume by kaiabwpdjqn on Friday March 06, 2020 @01:38PM (#22506052)
I guess. But we already optimize these things. Without any specific domain in mind, I wonder how much better we could get. Like maybe amazon could find the global minimum cost to route, but right now it’s getting pretty darn close.

Or maybe that’s entirely naive and the potential for finding faster solutions to real time problems is huge

Re:Turn down the quantum volume by dekhn on Friday March 06, 2020 @01:47PM (#22506132)
it is huge. that's the only reason people are motivated to implement QC- because in principle then we can break crypto, do QM much faster, solve intractable problems, etc.

Day-to-day, we're not really blocked on QC to get important work done.

Re:Turn down the quantum volume by kaiabwpdjqn on Monday March 09, 2020 @12:32PM (#22526731)
Ok but what I’m looking for is an actual example of an intractable problem.

Breaking crypto is one, I guess, but it’s also one that makes everything worse, so I don’t take that as a useful outcome.