9 ms·
D-Wave achieves calibration of Advantage2 processor
- az09mugen 2y agoWow, 4,400+ Qubits is impressive, I wonder how they made it stable. Last time I read about the record it was IBM with around 1000 qubits.
- rurban 2y agoThis looks like a final goodbye to good old RSA
- MattPalmer1086 2y agoD wave don't make general quantum computers. They use what is called quantum annealing. It's not comparable to IBMs, and you can't run general quantum algorithms on it.
- dewarrn1 2y agoI'll bite: what quantum things can they run on it? Or, what is its utility as a quantum computing device?
- setopt 2y agoQuantum annealers (like DWave) can solve optimization problems efficiently. But they can’t run general quantum algorithms such as Shor’s algorithm, that requires a general quantum computer (like what IBM and Google are doing).
- dewarrn1 2y agoThanks!
- adgjlsfhk1 2y ago> can solve optimization problems efficiently can possibly solve some (but without any guarantees on which or if any actually exist)
- rasz 2y ago>optimization problems efficiently did it reach the point where it can do any useful work faster than standard computer? Last time I read about it it was something stupid like "It can simulate its own noise"
- t34h32l4j233l4 2y agoIn fairness, neither can the ones IBM-GOOG are building.
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- MattPalmer1086 2y agoTrue, but only because we haven't got enough (error corrected) qubits. In principle they could, whereas the dwave device will never be able to.
- smoyer 2y agoIt's the quantum version of simulated annealing.
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- az09mugen 2y agoThanks for the precision, that might also explain the score of my comment. I'll get more info about quantum annealing.
- throwaway81523 2y agoImagine a Beowulf cluster of those.
- exabrial 2y agoI'm just wondering, can we run shors algo yet or no? :)
- ionwake 2y agoHow would we know
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- MattPalmer1086 2y agoNot on a d wave processor, it's not a general purpose quantum computer.
- andyjohnson0 2y agoThe systems made by D-Wave do quantum annealing, not general purpose quantum computation. As such, they are very useful for optimisation problems but they can't run Shor's algorithm.
- slenk 2y ago[flagged]
- nickpinkston 2y agoYes, and it can explore the entire map all at once.
- deleted 2y ago[deleted]
- parl_match 2y agoEpic comment, fellow Redditor.
- ChrisClark 2y agoReddit is too new for that type of comment. You've got to go back to slashdot.
- parl_match 2y agoWhat's slashdot
- tired_and_awake 2y agoIt's like fark but more tech posts
- propter_hoc 2y agoMore hot grits, anyway
- 1attice 2y agoAnd, back in the day, Natalie Portman references
- 2y ago
- m3kw9 2y agoso whats stopping them from running these chips side by side to add more qubits?
- jojobas 2y agoThe qubits must have a shared state. I don't think you can entangle separate machines.
- GuB-42 2y agoYou could add "marketing qubits". But it won't work for what a large number of qubits are useful for. The point of having quantum computer is that qubits can be in a superposition, be both 0 and 1 at the same time. The consequence is that for some algorithms, the computing speed scales exponentially to the number of qubits, while it scales linearly to the number of classical bits. But in order to get that exponential speedup, the qubits have to stay coherent, which mean you have to combine them to execute the operation, but with zero disturbance from anywhere else. It is really hard to achieve, a single stray photon could completely destroy your calculation. And the more qubits, the harder it is. If you don't care about coherence, your qubits become no better than classical bits and having a quantum computer become useless. A way to think of it is that a 30 qubit chip is a million times better than a 10 qubit chip, but three 10 qubit chips is just 3 times better than a single 10 qubit chip.
- akomtu 2y agoOr a single stray neutrino? It seems these quantum computers can be used as very sensitive antennas.
- lmm 2y agoA qbit is only a qbit if it's entangled with other qbits. You have to keep the whole state in superposition.
- akomtu 2y agoIs it basically an array of coupled oscillators with a nuance that the oscillators are quantum and reading or changing their state is nontrivial?
- snvzz 2y agoHow many error-corrected qbits?
- harha_ 2y ago>D-Wave I never understood the value of their product(s). Is someone right now using their computers? How do they make money to keep the company afloat? It feels like whenever I read an article about D-Wave, the details are obfuscated, but that's probably just me being unknowledgeable when it comes to quantum computing.
- dark-star 2y agoAFAIK they're still investor-funded and don't make any (noticeable amount of) money yet
- RaftPeople 2y agoThey are making sales, like to Los Alamos National Laboratory, but it looks like it's mostly being used for testing if it's valuable.