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Title: 512 qubit D-WAVE 2 Post by: zif33rs on May 17, 2013, 04:31:28 PM Nasa purchased a 512 qubit D-Wave 2 quantum computer for $15 million.
http://www.bbc.co.uk/news/science-environment-22554494 "D-Wave Systems has been focused on building machines that exploit a technique called quantum annealing - a way of distilling the optimal mathematical solutions from all the possibilities." Apparently they work and are here to stay. I think inside 15 years this could be a real issue to sha-256 encryption. I have done some research into this and while at this time I dont feel this poises a threat, in the near future with optimizations and advances I think it very well could. I am pretty confident that Moore's Law will hold true with these quantum machines as it has with x86. Anyone care to enlighten me further? Title: Re: 512 qubit D-WAVE 2 Post by: gadman2 on May 17, 2013, 04:51:53 PM Wait until they make quantum ASICS, in the next 20 years. Assuming bitcoin is still around, a single quantum ASIC would be able to out hash the, as of now, entire global network hashrate. And probably by a factor of more than 100.
Title: Re: 512 qubit D-WAVE 2 Post by: zif33rs on May 17, 2013, 05:22:26 PM I think by definition a quantum computer is sort of an asic already.
Title: Re: 512 qubit D-WAVE 2 Post by: AzureEngineer on May 17, 2013, 07:02:09 PM It is not a "real" quantum computer. It uses "sort of like but not quite quantum computing" and must be, like an ASIC, designed with a very specialized purpose in mind.
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