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Diamonds Key To Quantum Computing
I Don't Believe in Imaginary Property writes "Scientists P. Neumann, N. Mizuochi & co. have advanced quantum computing by finding a new method to get two-way and three-way, high quality quantum correlations that persist for hundreds or thousands of microseconds, even at room temperature. Their paper (subscription required) describes how they manipulated electrons from nitrogen vacancies in diamond using microwaves to entangle adjacent carbon-13 nuclei. Even better, this builds on previous results which indicate that diamonds with nitrogen impurities may be the key to creating useful quantum computing devices. The article provides a good description of what nitrogen vacancies are and why they prove useful."
How nice now... The first quantum computer on the market will have to use diamonds.... So what will that mean? A $8 million price tag?
Taxation is legalized theft, no more, no less.
So now diamonds are a supercomputer's best friend?
"Quantum diamonds are forever. Or are they?" --Lord Nimula
Diamond computers.
Who cares if they work? People will buy them anyway.
From Wikipedia: "LifeGem is the world's first company offering to synthesize diamonds from the carbonized remains of people or pets."
Just another possibility for useful recycling.
CC.
TaijiQuan (Huang, 5 loosenings)
Maybe they should try with dilithium crystals.
Ok, you go get all the high tech expedition stuff, and I'll teach the gorilla sign language, then lets go get em!
But do NOT pack any damned shaped charges!
What if Tetris was invented by Nazis?
... for hundreds of thousands of microseconds.
We need to figure out how to make our control crystals less susceptible to Zat'n'ktel fire and resistant to staff blasts before production.
Oh, and we might need to consider locking the compartments that hold our control crystals...
The whole notion isn't that different from doped silicon.
No folly is more costly than the folly of intolerant idealism. - Winston Churchill
Well I'm not sure about that, but there is an interesting co-incidence here, silicon is in the 4th group, and so is diamond(carbon).
electrical(electronics) computers -> silicon
Quantum computers -> Diamonds (carbon)
we need to add impurities to silicon to get it to work the way we want it, these guys are adding impurities to carbon to get it to act the way they want.
The resemblance may be superficial but it is there, nature is symmetric after all.
blog plug -> The Darker Side of Light
When diamonds are a nerds best friend.
Hey don't blame me, IANAB
Natural diamonds are much more abundant than they'd have you believe. There's an artificial scarcity. Large, high quality diamonds are pretty rare, but there are plenty of small ones (enough to make tools out of them, and enough that diamond jewelery has next to no resale value.) The markup on new diamonds is huge and the supply chain is narrow.
Anyhow, isn't this whole thing the plot of the First Wave episode "The Apostles"? Except possibly without aliens? And probably fewer biker gangs?
is in my laptop? They could also make these artificially, putting in the precise concentration and distribution of nitrogen. All I heard was 'Quantum Computer' and 'persists for a real amount of time' and 'room temperature.'
while(1) { fork(); };
Science should be done with free, open sharing of the results, so that anyone, anywhere, can read the details and possibly come up with the next idea.
These subscription journals are holding back science.
The service of organizing peer-review is logically independent
of whether something is in a limited distribution paid, paper
journal. Sell google ads on the things if you must, dammit.
I know its a bit offtopic but it pisses me off royally.
Science is above all else about building shared knowledge.
Period. If you're putting your findings behind firewalls,
you are harming science.
Where are we going and why are we in a handbasket?
I agree with you entirely. But note that while you are a graduate student (and undergrad too in most cases) you have access to 99.99% of all Journals through your universities resources (library, and online in my case). This is how it is in Canada anyway. I find it strange in general that they charge money. It must be for the corporations that have no academic ties and can afford to fork over the money. Anyway, information wants to be free. As far as I'm concerned, education should be free from Grade 1 to Post-Doctorate. This includes textbooks and journal papers.
...am looking forward to quantum computing. This way, my system files on Windows will both have a rootkit and not have a rootkit at the same time!
Random Thoughts From A Diseased Mind (Not For Dummies)
Can someone please tag this as "Zardoz" http://www.imdb.com/title/tt0070948/?
Thanks
Could you please build my quantum computer with cubic zirconia instead? I'm kinda on a tight budget. :-/
As much as it's a cartel and as much as logic says otherwise, I'd easily get a diamond ring if she was so inclined. Believe it or not, for many that is as much a part of the marriage ceremony as the white dress, wows and all that. "A diamond is forever" is quite frankly probably the single best marketing slogan in history. There's rubies and saphires and emeralds and many other gemstones, but it placed diamonds in a category of its own and at the same time it exploits your own insecurity. No matter how much you think this is marketing BS from de Beers, she might not. Unless you're really, really sure she won't think you're cheap or sending subliminal messages or whatnot I'd just get the ring and eat that feeling of having been suckered. There's a time and place to take your battles in a marriage, and I think de Beers know damn well they picked one of those where it's not.
Live today, because you never know what tomorrow brings
I just can't see spending the rest of my life with someone who is that susceptible to advertising. Even if she's physically attractive, that much dumb strikes me as being a worse kind of ugly.
That's the tricky part of running a research group - you want to publish your results in order get enough citations/references in other papers, in order to get further funding. But if you give away too much information, someone else can just set up a competing research department and take away your funding, so you end up having to start from scratch again.
So your survival tactic is to create a research group as large as possible to keep up the production of papers and the number of directions you can go in, or to investigate an area that nobody else has any interest in.
Having an expensive subscription for these research papers is one way to get the references, but reduce the risk of losing your funding.
Vintage computer adverts: http://www.vintageadbrowser.com/computers-and-software-ads
If you google search hard enough, you can usually find these papers free of charge from the originating university, either in the author's own website, or from a departmental archive.
I'm at an university, and even with a free Athens login from the campus library, our university still doesn't have a subscription to one or two of these companies. Basically, the subscription managers at the library will get a free trial or purchase a 1 years license with one of these companies. If enough papers are referenced, then the subscription is maintained, otherwise it is dropped.
Many research fields form their own cliques where they reference each others papers, and none from anybody else. If you are not in this clique, then it isn't worth taking out a subscription to that journal.
Fortunately, it is possible to get the jist of an unreadable paper by reading the descriptions from other papers.
Vintage computer adverts: http://www.vintageadbrowser.com/computers-and-software-ads
as much a part of the marriage ceremony as the white dress, wows and all that.
This is Slashdot.
Diamonds are formed by tetrahedrally bonded carbon atoms. Tetrahedrally bonded silicon atoms form quartz, which I do not believe is used much in computing equipment.
However, it costs (according to Physical Review) more than $1000 to publish an article. There is a lot of typesetting, they might pay reviewers, and they have to be reliable.
Everyone at a university gets free access to the articles anyway, through their library proxy.
I've just written an assignment on a Phys. Rev article, actually, and did you know that you can now pay ~$1300 and make an article public?
Well yeah, we'd all like stuff to be free. Why should science be treated so specially in this regard?
Doesn't it make you feel good to know that our freedoms are protected by politicans, lawyers and journalists.
As with all things Quantum, its a model of what could be known.
My Mum has already achieved what you're after
Mom "but it didn't have a virus before you looked at it!"
I "did it take 30 mins to boot?"
Mom "yes, but it didn't have any virus"
thx e
Why do you think she'd want it so much if she really knew what it was all about? The media has made a pretty big deal about war diamonds in the past couple of years, and there are all sorts of new age movements centered around cleaner/greener/simpler lifestyles. *shrugs* Why not try to sell her on the idea that the wedding band is the only ring that really matters anyway?
open source modern art: laser taggi
The last paragraph of TFA is notable:
There are a bunch of different ways to represent a qubit, the fundamental unit of quantum computation. They all have advantages and disadvantages. I myself work with photonic qubits. Using photons it's actually considerably easier to get and hold coherence (high-quality quantum correlations) for as long as you need it than in other representations. But one of the problems with photons* is that they always travel at the speed of light (well der), and while that's great for communication, it's not so good if you actually want to store quantum information somewhere. So finding a good way to keep coherence for a reasonable length of time for something stationary is useful work.
*The other problem with photons is that they are relatively difficult to get to interact with each other. There are only a few situations where there is any appreciable interaction between two photons.
O wow! how qualified! You know, i may be only 33 but i remember very well what people educated in the 60ties (e.g. Teachers, Engineers) told me when i was a child how transistors could NEVER replace tubes for certain applications (e.g. High power). Yea right. We see that now..... I work in the QC field, and we will not see any really working quantum computer doing any non-trivial task (i personally dont count dwaves "thermally assisted adiabatic QC" as one) the next 15 Years and after that it may take 30 Years or forever until it gets cheaper to buy QC instead of classical ones for the applications where QC are optimal. And even then it will not be in personal computers. But QC has the potential to replace very big computing systems (e.g. Blue Gene) which use a huge amoung of material and Energy for protein folding by a comparatatively decently sized QC which may take including the infrastructure (condensed matter QC: cooling, vacuum, shielding rooms, rf signal sources, staged amplifiers, crogenic electronics, optical/Atom/ion QC: cooling, lasers, optics, UHV equipment.) something well below 1MW, if you dont need big pumping Lasers more like a few kW, of power and less than 200 square meters (some of them will however need a tailored base of the building to avoid vibrations).
If this had happened a few years ago when I got married, I would have had reason to demand a diamond as well. "But I want to do quantum calculations really really bad!"
Of course, 3 mos her salary vs 3 mos my salary would have bought me about as much diamond quantum computing as I got at the time anyways. Se la vi.
It isn't a coincidence. It is standard semiconductor physics. You can mix an element from the 3rd group with an element from the 5th group together to make semiconductors as well, such as GaAs. Different types of dopant (impurities) determine whether the semiconductor is n-type or p-type. In this case, the Nitrogen atoms have an extra valence electron than Carbon creating an n-type doped semiconductor. Diamond would probably make a decent semiconductor for conventional computers as well, but it is far more expensive than silicon.
Like your Sibling post had said, Diamond is tetrahedrally bonded carbon, it doesn't have that extra electron that makes 'graphite' a good conductor. Diamond here is not being used as a semiconductor from what I have understood (why I feel it cannot be used as one, not being one after all - I have written later).
You are correct about mixing 3rd group with 5th group but diamond (Carbon) is 4th group. notice however that you can mix 4th group with 5th group to give you your n type, which I already said still requires that the 4th group be a semiconductor which diamond is not.
I know about dopants etc. having spent four years in Electronics, however not being material sciences or something I may still be not completely correct. But thanks for the info any ways. Nitrogen has an extra electron but is also extra stable N_2 being almost inert (please notice the _almost_ ). I think it's cause of the strength of the tripple P-P orbital bonds.
Diamond would not at all make a good semiconductor for conventional computers the simplest reason being - Diamond is not a semiconductor, the more complete answer involving lots of quantum physics and me having to explain fermi levels. Please do check this out on wikipedia or some place (I'd suggest a book but I guess you may not have access to books on semiconductors unless you are an EE or in material sciences or something).
blog plug -> The Darker Side of Light
Agreed, which is why I said superficial.
blog plug -> The Darker Side of Light
> QC is based on a stupid conjecture (the Copenhagen interpretation of QM) that can never be observed
Excuse me. QC is NOT based on the Copenhagen interpretation. If you dont understand that in a real experiment you have to split the Copenhagen interpreation into two parts. 1) The measurement process, during which you create a 'split' in the space of possivle paths which separates your systems more and more, while introdusing the coupling a way that you replace one of the conjugate variables by your own (i.e. random) information. 2) The Philosophical idea 'if the path are so well separated, do i have many realities (if i 'amplify action' really stronly)?'. The first question is what matters to physicist, and belive me, it is understood quite well. The second one does not fascinate me. Until we understand simple things perfectly, i wont think about more complicated things....
Wow - do we now have a possible competitor to DWave's process trying to create FUD and deception as AC posts in a very thought-provoking thread?
What has the world come to?....oh, wait - what was I thinking; this is Slashdot, where AC posts are the most common (and sadly the most effective) method of generating thread-drift. It's true that most AC posts can be quite funny, so I'm not at the point of adjusting my threshold settings quite yet and I am aware of replying to a AC post is like arguing with someone on the Internet...but...day-am.
--ScottKin
I don't give a rat's behind about "karma" here or anywhere else. Don't like what I have to say here? Deal with it!
My Wife has one diamond ring (a 1/10 carat engagement ring) and a 2 ct. tw. tennis bracelet.
I wouldn't want to marry someone who's materialistic to the point that a 1/10 carat real diamond isn't enough to carry tradition. The diamond tennis bracelet was a gift purchased from a windfall of income.
She likes the nice look of a diamond or CZ. In fact, she'd prefer a 2 ct. CZ over a 1/4 ct. real diamond because it looks better for a much lower price.
De Beers may have started a nice tradition with diamonds, but the act of offering a ring in contemplation of marriage never required a real diamond. More women should think that way.
Please do me a favor and read the following: http://en.wikipedia.org/wiki/Interpretation_of_quantum_mechanics#The_Copenhagen_interpretation As it is said the Copenhagen interpretation is only an interpretation that we see QM systems in the way we see them. There are other approaches and as many people in the field and many who understood parts of Legget's work (and many other great people in the beginning of the 80s) I am not a fan of any theory requiring a wavefunction collapse or a concious observer role. And contrary to your assumptions superposition of Wavefunctions is NOT specific to the Copenhagen Interpretation, but a generic property of the QM we are using. And BTW i admire Deutsch, but not for the many-worlds interpretation (which does not qualify as a scientific theory because i can not make tests for it), but for his very solid work on infromation in QC.
rock on!
I know full well that tobacco is bad for you, so I smoke weed with crack
The girl I marry will either be:
A)A gorgeous airhead blonde who won't know that fake diamonds exist.
B)A classy girl who knows that buying real diamonds hurts lots of people and wouldn't want one.
C)Someone in between, who has me so whipped that I'd buy her a ring made out of my own spleen, and Microsoft Quality Assurance Licence (40 seat Enterprise version) to boot.
With any luck, constant programming will either ruin my eyesight to the point where option B becomes realistic, or result in the creation of a real holo-deck, making the whole issue mute.
The only diamonds I'd give a girl would be on the edge of a cutting disc or drill bit. Chicks with powertools >> chicks with jewelry.
My cynicism aside, jewerly in general is woefully overrated, with HUGH markups. Kind of a shame, because you'd think they'd make great investment devices. Better to use them for cool electronic devices like quantum computing!
Ruby Neural Evolution of Augmenting Topologies