Follow Slashdot stories on Twitter


Forgot your password?
DEAL: For $25 - Add A Second Phone Number To Your Smartphone for life! Use promo code SLASHDOT25. Also, Slashdot's Facebook page has a chat bot now. Message it for stories and more. Check out the new SourceForge HTML5 Internet speed test! ×

Comment Re:Physics Letters B?? (Score 2) 73

Different journals have different standards for the type of paper. For example, the format for Science and Nature articles tends to be less detailed and more focussed on the particular result obtained. Other journals are more suitable for more in-depth discussion of methods and their intricacies. Some of them, such as Physics Letters, promise rapid publication, whereas PRL etc., Science, and Nature can drag on for some time. Notice also that they have chosen to publish the papers open access, which not every journal allows. Impact factor isn't everything. And as another poster noted, there is a Science article in the works. Nothing fishy here.

Comment Re:Trying to understand this... (Score 1) 101

So this paper is about that very first step of actually making the qubits. One atom = one qubit. In this case, the "state" would likely be the atom's spin orientation. Spin and position are not connected by the Heisenberg uncertainty principle. Position and momentum are linked, as are energy and time.

Comment Re:Trying to understand this... (Score 1) 101

I'm not really sure what your question is, but I'll try to answer it! To make a quantum computer, you need a number of qubits. If you want to use atoms as qubits, you need to be able to repeatably trap, hold, and interrogate them over "long" timescales. If you could only trap a single atom 50% of the time, your computer would be very inefficient if you have, say, 30 qubits (ie. an array of 30 single atoms). By pushing this up to 83%, efficiency improves dramatically. Also, they can probably do better than 83% by improving their vacuum, but this would require taking their apparatus apart somewhat, and is not something people tend to do once they have a working setup!

Comment Re:Ebay (Score 1) 337

Yes, definitely ebay! Old analog scopes are just as good as digital scopes (in some cases preferable), but it depends on the application, and you can fix them if they break. If you need a really fast scope or want math functions, then you need a newer one. We have a few digital Tektronix scopes in the lab, and they are just fine. Also, what is handy with newer scopes is that they have USB ports so it's easy to save your data (if you need to).

Comment Re:StarCraft II - LAN PLAY (Score 1) 520

I also would like plain LAN play for Diablo III. Where I live, internet is still fairly expensive and the data caps are not liberal. I want to be able to play the game with my friends at home without needing a net connection. I loved Diablo II for the LAN play. If Diablo III will have no LAN play, I won't buy it and would encourage others to boycott it also.

Slashdot Top Deals

Thus mathematics may be defined as the subject in which we never know what we are talking about, nor whether what we are saying is true. -- Bertrand Russell