New quantum computing hardware sorts ions for computation

zogus

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Ghosts of bubble memory.
That is a good analogy. IMHO ion-trap and neutral-atom quantum computers have the potential to be commercially viable before anyone else, thanks to the quality of the qubits mentioned in the article, but the inherently slow clock cycle is probably going to kill both of them in the long term. Which QC is going to kill them—and whether it will be any of the existing players—are completely different questions.
 
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Nilt

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I'm having trouble accepting this bit:

The hardware itself isn’t manufactured, so there’s no device-to-device variability.

with this one:

This means that key components of the hardware can be built using standard electronic manufacturing, although lasers are still needed for manipulations and readout.

Doesn't this mean there clearly will be some variations, no matter how minor?
 
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the cave troll

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I'm having trouble accepting this bit:

The hardware itself isn’t manufactured, so there’s no device-to-device variability.

with this one:

This means that key components of the hardware can be built using standard electronic manufacturing, although lasers are still needed for manipulations and readout.

Doesn't this mean there clearly will be some variations, no matter how minor?

I think that the first quote would have been more clearly stated as:

The computing medium itself isn’t manufactured, so there’s no device-to-device variability.

With the computing medium being the individual atoms, rather than the hardware controlling them.
 
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zogus

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I think that the first quote would have been more clearly stated as:



With the computing medium being the individual atoms, rather than the hardware controlling them.
Yeah, the real point that the article was trying to make—but didn’t spend enough words on—is that the laws of physics guarantees that atomic/ionic qubits are perfectly identical in the sense that quantum mechanics has literally no way of telling any two qubits apart other than from their locations and velocities; whereas qubits that are manufactured by e.g. fabbing on silicon substrates aren’t.
 
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Nilt

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Yeah, the real point that the article was trying to make—but didn’t spend enough words on—is that the laws of physics guarantees that atomic/ionic qubits are perfectly identical in the sense that quantum mechanics has literally no way of telling any two qubits apart other than from their locations and velocities; whereas qubits that are manufactured by e.g. fabbing on silicon substrates aren’t.
Yeah, this makes sense after re-reading it with the right context. I knew I had to be missing something, since I'm certainly not anything remotely close to an expert in this field. One of the best things about Ars is the community has many experts in many fields, so I get to learn. So thanks for helping with that. :)
 
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texspeed

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Ghosts of bubble memory.
My first thought exactly. Their roadmap takes the density substantially further than was seen with any commercial bubble memory products I'm familiar with. I had a project that successfully demonstrated technical feasibility to replace a low-density magnetic tape system back in the 80s before Intel canceled their product.
 
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Dr. Jay

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Yeah, this makes sense after re-reading it with the right context. I knew I had to be missing something, since I'm certainly not anything remotely close to an expert in this field. One of the best things about Ars is the community has many experts in many fields, so I get to learn. So thanks for helping with that. :)
I've updated the sentence to hopefully make it more clear.
 
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Veritas super omens

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Always find these stories both fascinating and humbling. There are some very bright cookies out there.

"But doing so will require a mastery of controlling the flow of ions through four-way intersections."

Close your eyes and gun it. It's gotten me this far...
Except....be sure to stop at green lights...your brother might be coming.
 
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HolyChao

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Forgiving my vast ignorance of how they're actually moving these ions around:
Couldn't they use a "traffic circle" type node at junctions with 4 of those diverter electrodes they already use in the Helios intersection?
They already have the travelling in a ring/oval down, based on the H1->Helios models.
 
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Veritas super omens

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If you need a supercomputer to explain your theory, then your theory doesn't explain anything, it's just pattern matching existing data. The age of probability as an explanation needs to end.
Everything, everywhere, all the time is probabilistic. It is all built from quantum components. Quantum components are inherently probabilistic.

Reality is under no obligation to meet your prejudices.
 
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bluefuel

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Everything, everywhere, all the time is probabilistic. It is all built from quantum components. Quantum components are inherently probabilistic.

Reality is under no obligation to meet your prejudices.
pretty sure that once probability==1 we can no longer count on luck or any such divine consideration to deliver us from our ignorance! it's probably mostly to do with perspective though.
 
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