[LibWhacker]

Next... Force a quantum computer that hasn't been built yet to compute. Then you'll have something! j/k

[Crazieman]

But will it run Doom 3?

(Old Slashdot joke)

[GeronL]

interesting but its over my head.. lol

[Viking2002]

".......the result of a computation may be learned without actually running the computer."

[Greetings_Puny_Humans]

When they have a cardboard box with a unattached screen that can turn on by itself and play SplinterCell Double Agent, THEN I’ll be impressed.

[Vision Thing]

[Employing the counterfactual quantum phenomenon, several groups have proposed and demonstrated a new model of secret communication in which no physical signal particles are transmitted, which provides practical security advantages.]

A new challenge for the nsa, cia, dia, and fbi.

[Sir Gawain]

From what I’ve read they don’t even really know how it works. It sends information into the quantum realm (or another dimension) and then the answer comes back like magic. Makes you wonder just who or what is supplying the answer.

[lentulusgracchus]

[Article]The researchers, led by Prof. Jiangfeng Du at the University of Science and Technology of China and Prof. Liang Jiang at Yale University in the US, have published a paper on the high-efficiency counterfactual computing method in a recent issue of Physical Review Letters.

---

God damn it.

Where are our guys?

This is top-drawer theoretical physics. Do you know what this means for 15 years down the road?

How about military technologies we can only dream of, illuminating U.S. submarines and aircraft and decrypting our best cryptosystems in a flash?

What is this collaboration with Yale -- a thinktank pipeline sucking our best people dry and channeling their insights to Chinese skunk works?

I really didn't need to read something like this, not when we've got America's biggest enemy in the White Hut.

The British may have to bail us out on this growing -- not technology, but hierarchically higher theoretical knowledge -- disparity, which threatens us like no money-slurping low-level spy ever did.

This is top-level espionage, conducted out in the open "in the name of science".

[Swordmaker]

MAGIC

[davius]

Potentiated photonic cryptography via axial polarization! Brilliant! Thanks for posting this.

[Norm Lenhart]

I must confess, it is rather quaint to observe the people of your world being fascinated by such basic discoveries...

[aquila48]

"How counterfactual computing works By "not running," the scientists mean that the computer—which can operate in either an "on" subspace or an "off" subspace—stays in its "off" subspace for the entire computation. Physically maintaining the computer in the "off" subspace, in this scheme, involves controlling the spin properties of a diamond system, which acts as a quantum switch. Some of the spins must be kept in a superposition state, in which they occupy two states at the same time. To control the spin superposition, the physicists took advantage of the quantum Zeno effect, in which frequent measurements on a system can "freeze" the system in its current state. By applying a sequence of pulses to the system, the scientists could keep the system in its "off" subspace, and so keep it from running." Ahh, now I get it!

[<1/1,000,000th%]

Good luck.

[this_ol_patriot]

So far, however, the efficiency of this process, which is called counterfactual computation (CFC), has had an upper limit of 50%, limiting its practical applications.

It's a Schrödinger's Catputer using the unknown state as a flip-flop, by using quantum hocus-pocus (in a good way) they are able to increase the odds of knowing the on-off state, i.e. 0 or 1. Binary compute.

[fruser1]

“a new model of secret communication in which no physical signal particles are transmitted”

So they’ve finally found a way to get through my tinfoil hat.

What now?

[ShadowAce]

[GOPJ]

Employing the counterfactual quantum phenomenon, several groups have proposed and demonstrated a new model of secret communication in which no physical signal particles are transmitted, which provides practical security advantages.

On the other side of black holes people are ticked off about strange messages that keep appearing on their TV screens...