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First 'Quantum Computer Chips' Demonstrated
holy_calamity writes "The first quantum computer chips have been made by two US groups, New Scientist reports. Both NIST and Yale have demonstrated chips where information was transferred between two superconducting qubits using a 'quantum bus'. The bus is made from a cavity that traps a single microwave photon as a standing wave — the NIST group also managed to use the bus to store data from one qubit for a short time. 'After encoding information in one qubit, they transferred it into the cavity for 10 nanoseconds before transferring it to the other qubit. Yale's chip used qubits around 1-micron square built on silicon, while NIST used larger 10-square-micron qubits on top of sapphire. In both prototypes, the bus between the qubits was between five and seven millimeters long.'"
maybe I'm first, maybe I'm not.
Is it just me, or do you hate it when people say "Is it just me..."?
Howdy. I don't claim to understand all of this. However, the more I read, the more I am convinced the universe makes no sense. I am waiting for the guy who is dreaming all of this to wake up and for all of us to stop existing.
See my journal for slashdot ID's by year. Mine created in 2005. http://slashdot.org/journal/289875/slashdot-ids-by-year
I was going to tell you, but I changed the outcome by reading it!
Well, back to rejecting software patent applications.
What if you put a cat inside that Beowulf cluster you're not imagining?
... but will it run Linux? (Or will it run and not run Linux at the same time?)
You can't know how many cats wide it is or fast it is until you transfer data over it.
Once quantum computers become mainstream, what will we use for encryption? Are there algorithms that are computable by standard computers but are also unbreakable using quantum computers?
-Bucky
I work in a physics lab, and a few days ago the unimaginable happened.
A quantum experiment had gone horribly wrong, going completely out of control and destroying itself in the process.
The devastation was unimaginable.
All that was left of the experiment was a crater, almost a nanometre across.
As soon as we get the electron microscope on it, I'll have more details of what went wrong.
My understanding is quantum entanglement cannot be used to transfer information.
Well, it has never been successfully tested.
Why is it things like this never have pictures? I wanna see pictures. Its no fun to read about things that you don't (quite) understand unless you can ooh and ahh at pictures while you pretend to understand. Then you can point at your screen and say "See? Its THAT piece. That's what makes it work. Its the, err.. umm, thing that makes it work!"
Readers may find the Yale group's press release interesting.
The one time pad, where the key length = message length is still safe as long as you never reuse the key. (the "one time" in one time pad.
As simple proof of this is that for any encrypted text of length N, there exists a key also of length N that will decrypt the etext to any plain text of length N. Therefore there is no way for an attacker to determine if an attempted key is valid or not. There if an attacker were to try every single key of length N, which is possible on some super large future quantum computer, all he will get out is every single decryption of length N, with no way to determine which is correct.
Suppose the plain text was "attack at dawn" and the etext was "xbdhgfhwteriur". After the attacker used his q-computer he'd have "attack at dawn", "attach at noon" and "attack at fred", along with 64 quintillion other combinations.
All ideas^H^H^H^H^Hprocesses in this post are Patent Pending. (as well as the process of patenting all postings)