Looks like they do! I’d only heard about them in passing, but here’s an article: www.mdpi.com/1424-8220/24/16/5402
Comment on Regarding this picture, where do you think quantum computers lie and why?
hendrik@palaver.p3x.de 4 weeks agoThat certainly counts as hype. But I wonder if there's any independent information out there about these computers. All I can find is self-advertising and news about investors. I mean we occasionally do get these claims that someone proved quantum supremacy. But as far as I know the validity often isn't clear or the results aren't reproduced yet. And sadly I can't skim the papers since lots of them aren't open access.
And for research it doesn't matter if you need days to cool down the computer just for one calculation. Or if most results are wrong due to noise and you have to re-do every computation on a traditional computer to check which results are correct. But I'd expect it takes them years or decades from a protopype like that to something actually useful. And as of now we haven't even solved superconductivity or the temperatures or decoherence. So I'm always a bit careful with these claims frome some quantum startups.
feannag@sh.itjust.works 4 weeks ago
hendrik@palaver.p3x.de 4 weeks ago
That article talks about a bedside magnetometer device, used to measure the heartbeat of a person. I can't find any reference to quantum computers 🙁
feannag@sh.itjust.works 4 weeks ago
I appreciate the conversation, but it does seem like you’re dismissing everything to fit with your narrative. Quantum computing is absolutely a new and emerging field, I was just trying to showcase that it’s farther than 21 divided by 7. From wikipedia, en.m.wikipedia.org/wiki/Magnetocardiography, MCGs are pretty much by definition a quantum sensor. The technical aspects of the paper linked goes in to how their device is different and why it does not require cryogenic cooling.
hendrik@palaver.p3x.de 4 weeks ago
you're dismissing everything [...]
Not at all. On the contrary, I'd love to learn some more about it. The thing is, we're talking about something here (quantum computers) and you're saying they have one. And then you go on saying MCG is useful and they bought some SQUID sensors... Of course I'm dismissing that. Since it has nothing to do with the conversation we're having?! I don't even disagree. Quantum effects certainly exist. And I bet measuring small magnetic fields is super useful in many applications. But what's that do do with the question I asked?
xavier666@lemm.ee 4 weeks ago
www.sandboxaq.com/solutions/aqnav
This is their only product on the market which has quantum in their product description. It apparently uses “quantum sensors” to provide location information. I don’t know how it works. I think they have made a hard shift in their strategy in the last 2 years by offering AI solutions instead.