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Wait, do working quantum computers actually exist today? D-Wave is the one I heard about, but the wiki page says it's no faster than ordinary computers and not
by cabirum 11y ago
Wait, do working quantum computers actually exist today? D-Wave is the one I heard about, but the wiki page says it's no faster than ordinary computers and not even sure it works as advertised.
- jackgavigan 11y agoD-Wave's hardware is customised for a particular function: http://physicsworld.com/cws/article/news/2014/jun/20/is-d-wave-quantum-computer-actually-a-quantum-computer http://physicsworld.com/cws/article/news/2014/jun/20/is-d-wa... A team at UCSB built a prototype quantum computer that successfully factored 15 a few years back: http://www.nature.com/nphys/journal/v8/n10/full/nphys2385.html http://www.nature.com/nphys/journal/v8/n10/full/nphys2385.ht...
- marcosdumay 11y agoYes, and last time I saw, they could break 11 bits long keys. There are probably better ones now, it's been a long time that they don't make the news. Anyway, they are still far from being practical, but do exist.
- krastanov 11y agoThere are indeed "quantum computers" that work on a few qubits (less than 10), but without what is called "error protection". They are useless for running factorization of practical sizes (i.e. they do break small keys, but you can break those by hand on paper as well).