Significant Advance in Quantum Computing

wcitech writes "Apparently scientists have been able to create circuitry that mimics the behavior of atom pairs by using superconductors." From the article: "The work, reported in the Feb. 25 issue of the journal Science, demonstrates that it is possible to measure the quantum properties of two interconnected artificial atoms at virtually the same time. Until now, superconducting qubits--quantum counterparts of the 1s and 0s used in today's computers--have been measured one at a time to avoid unwanted effects on neighboring qubits." The second Quantum computing revelation this month, in fact.

Comments

I'm not a quantum engineer

[GreyWolf3000]

This question may be stupid but...

Would we need to read 32 quantum states at a time to get '32-bit' registers to build basic processors??

Re:I'm not a quantum engineer

[MOBE2001]

"Two entangled qubits, meanwhile, can simultaneously evaluate four inputs. Put another way, a traditional memory register with eight bits can store only one of a possible 28, or 256, digital "words," but a quantum register with eight qubits can represent and compute with all 256 words at once."

So, If you get all possible answers simultaneously, how do you tell which one is the right answer to the problem you're working on?

Booor-ing...

[Goonie]

Why merely crack RSA and radically speed up quantum physics simulations? That's aiming far too low.

Instead, Tien Kieu from my university wants to solve arbitrary Diophantine equations using quantum effects. If he's a) correct, and b) it becomes possible to create the required quantum behaviours for arbitrary equation, the following problems become solvable:

• The halting problem for arbitrary Turing machines, with all that that would imply.
• The Riemann hypothesis.
• Goldbach's conjecture

  Needless to say, to say people are sceptical of Kieu's ideas is an understatement, but it's fun to speculate about the "what if"...