Slashdot Mirror
On Diamond-Based Quantum Computing
Roland Piquepaille writes "Quantum computing is usually associated with extremely low temperatures. Physicists at Harvard University have shown that diamonds can be used to create stable quantum computing building blocks at room temperature. A nitrogen vacancy in diamond could lead to quantum registers able to store or retrieve data. '"The problem is, what makes single nuclear spin so stable - its weak interaction with its surroundings - also prevents us from directly manipulating it," Lukin says. "How do you control something that can't interact with anything?" You do it gingerly and indirectly, the Harvard physicists report in Science. They found that nuclear spins associated with single atoms of carbon-13 - which make up some 1.1 percent of natural diamond - can be manipulated via a nearby single electron whose own spin can be controlled with optical and microwave radiation.'"
no this will not influence the crap with DeBeers. They have an emotional brand. They took a rock of little interest gem wise and made it into something based on a monopoly and pandering. Diamond good for cpus will have no greater impact on diamond gem prices than synthetic ruby or sapphire has had on prices of those gems. Now business that are into the gem quality diamond business, making better diamonds than the earth does, they might. But seeing as the CPU's will likely be made via chemical vapor deposition, or physical vapor deposition (probably on a Tungston sulfide coated substrate), or whatever, there's not much overlap in the technology.
You want to kill DeBeers, better education. A diamond from a press isn't any more special than a diamond dug up by an oppressed 3rd worlder. If anything, the ability to customize them makes them more special. But try convincing people raised on a diet of dug up diamonds feel and radiate love.
This story is a classic example of selling your research by pretending it may have a practical application. Do something with a quantum system, and sell it by saying it has a potential quantum computing application. Do something on a nanoscopic scale, and call it nanotechnology. Do something with a semiconductor, and say it is for future chips.
What these researchers have done is pretty standard fare: the nitrogen vacancy defect in diamond is photo-active center that can and has been studied extensively by optical excitation. The unpaired electron spins of these centres can be manipulated via microwaves. With a low concentration and tight focus, you can study individual centers. Some of these will have and adjacent carbon-13 instead of the more abundant carbon-12 neighbor. Its magnetic moment can be observed through its interaction with the electron spin. Cute, but nothing what so fucking ever to do with any kind of practical application.
Science has become colonized by hypesters, marketeers, and slick talking band wagon jumpers. All in pursuit of that next bit of funding and fame.