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Announcing the D-Wave 2X Quantum Computer

93 点作者 johlo将近 10 年前

9 条评论

w0000t将近 10 年前
<a href="http:&#x2F;&#x2F;www.dwavesys.com&#x2F;press-releases&#x2F;d-wave-systems-breaks-1000-qubit-quantum-computing-barrier" rel="nofollow">http:&#x2F;&#x2F;www.dwavesys.com&#x2F;press-releases&#x2F;d-wave-systems-breaks...</a><p>This announcement, claims:<p><i>Every additional qubit doubles the search space of the processor. At 1000 qubits, the new processor considers 2^1000 possibilities simultaneously, a search space which dwarfs the 2^512 possibilities available to the 512-qubit D-Wave Two.</i><p>Since we still aren&#x27;t able to factor any large numbers with it, those 2^1000 bits don&#x27;t really work like they say they do. I&#x27;m guessing there are many caveats behind their description.<p>I would appreciate any explanation from an expert.
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mechagodzilla将近 10 年前
These results seem a bit misleading - they&#x27;re comparing their multi-million dollar system to a classical optimizer running single-threaded on a 3-year old processor (Intel Xeon E5-2670), and then saying &#x27;look how much faster we are than a classical optimizer!&#x27;<p>How does this compare to a giant cluster of new Xeons with faster interconnects?
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Beltiras将近 10 年前
I think the most significant gain made here is not speed but power consumption. On <a href="http:&#x2F;&#x2F;www.dwavesys.com&#x2F;d-wave-two-system" rel="nofollow">http:&#x2F;&#x2F;www.dwavesys.com&#x2F;d-wave-two-system</a> they compare a supercomputer using almost 2 gW while 2X uses 27 kW when you factor in &quot;the fridge&quot;. I don&#x27;t know if that&#x27;s an apples-2-apples comparison, hoping the supercomputer is set up to solve comparable problems. If I am understanding this properly they have a great product on their hands and a great deal of units to make.
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arvinjoar将近 10 年前
Cue blog post by Scott Aaronson, will be interesting to hear his take on this.
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logicallee将近 10 年前
Didn&#x27;t we just read about the NSA moving to quantum resistant algorithms a few days ago?<p><a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=10064226" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=10064226</a> - NSA announces plans for transitioning to quantum resistant algorithms<p>also I found this from a few hours ago: <a href="http:&#x2F;&#x2F;arstechnica.com&#x2F;security&#x2F;2015&#x2F;08&#x2F;nsa-preps-quantum-resistant-algorithms-to-head-off-crypto-apocolypse&#x2F;" rel="nofollow">http:&#x2F;&#x2F;arstechnica.com&#x2F;security&#x2F;2015&#x2F;08&#x2F;nsa-preps-quantum-re...</a>
taylodl将近 10 年前
What language is used to program for this processor? I wouldn&#x27;t think you&#x27;d take the same approach programming a quantum computer as you would a conventional computer. Is there a quantum computer simulator? What does the development workflow look like? How do you debug? Boy I have a lot of questions!
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sshb将近 10 年前
It would be nice to have these computers available in public clouds. It is not trivial though.
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khed将近 10 年前
There was a paper in 2008 claiming that adiabatic quantum computers could factor with a quantum speed up. <a href="http:&#x2F;&#x2F;arxiv.org&#x2F;abs&#x2F;0808.1935" rel="nofollow">http:&#x2F;&#x2F;arxiv.org&#x2F;abs&#x2F;0808.1935</a>
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eternalban将近 10 年前
Wake me up when we have quantuum networking gear and magical perfect locality :)