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Diamonds are forever -- or, at least, the effects of this diamond on quantum computing may be. A team that includes scientists from USC has built a quantum computer in a diamond, the first of its kind to include protection against "decoherence" -- noise that prevents the computer from functioning properly.
The test is a search of an unsorted database, akin to being told to search for a name in a phone book when you've only been given the phone number.
Sometimes you'd miraculously find it on the first try, other times you might have to search through the entire book to find it. If you did the search countless times, on average, you'd find the name you were looking for after searching through half of the phone book.
Mathematically, this can be expressed by saying you'd find the correct choice in X/2 tries -- if X is the number of total choices you have to search through. So, with four choices total, you'll find the correct one after two tries on average.
A quantum computer, using the properties of superposition, can find the correct choice much more quickly. The mathematics behind it are complicated, but in practical terms, a quantum computer searching through an unsorted list of four choices will find the correct choice on the first try, every time.
Though not perfect, the new computer picked the correct choice on the first try about 95 percent of the time -- enough to demonstrate that it operates in a quantum fashion.
...unlike earlier gas- and liquid-state systems -- may represent the future of quantum computing because they can be easily scaled up in size.
Although not 100% identical on a molecular level they're both diamonds..
Originally posted by windword
That is super cool. I didn't see anywhere in the article whether they created the diamond or used a natural one. But, it gets me thinking. When my parents died, their bodies were cremated. I learned that, for a hefty price, we could have their ashes made into a diamond.
Imagine in the future, what if one could use mom's ashes to make a cool computer?!