Physicists Store, Retrieve a "Squeezed Vacuum" 106
An anonymous reader sends us to the site of Science Magazine for news that will interest those who have followed experiments to slow and stop light. Research groups in Canada and Japan have succeeded separately in storing a special kind of vacuum — a "squeezed vacuum" — in a puff of gas and then retrieving it a split second later. Such experiments might lead to advances in quantum encryption. At the very least they will help to illuminate the boundary between quantum and classical realms.
There is no boundry (Score:5, Insightful)
That drawing board is getting a bit small... (Score:5, Insightful)
Should quantum computing become reality, perhaps we will have 400000x current computing power on our desktops. At that point, voice recognition becomes reality, huge data stores become reality and usable. Things like this could push the information age into a whole new era.
meeting of the minds (Score:5, Insightful)
Re:meeting of the minds (Score:3, Insightful)
I can't believe I just replied to that.
Re:Quantum computers (Score:5, Insightful)
Quantum computing is nigh worthless for Monte-Carlo. Yes, you can simulate a ton of inputs and get a ton of outputs in one run, but it all collapses into one waveform in the end anyway. Throw in the fact that Monte-Carlo simulations are classified as "embarrassingly" parallel and Monte-Carlo is the last thing you'll see on quantum computing.
The problem then becomes building a quantum computer that is faster than the supercomputers of the time. The first quantum computer prototype won't just start out as a powerhouse. After we get the first quantum computer working, it may be up to a decade before we see one actually being used.
The entire notion of faster or slower is thrown out the window with quantum computing. The power of a quantum computer is not limited by its speed, but the number of qubits. Furthermore, the first quantum computer prototype already exists. Indeed it is far from a powerhouse; it was used to factor the number 15. If we could expand the number of qubits arbitrarily we would have functional laboratory quantum computers, but it's our inability to increase the number of qubits because of decoherence and other physical limitations that prevents us from having useful quantum computers.
Re:That drawing board is getting a bit small... (Score:2, Insightful)
Re:Mark My Words (Score:2, Insightful)
Re:Mark My Words (Score:4, Insightful)
Re:That drawing board is getting a bit small... (Score:5, Insightful)
In 1903, man flew in a heavier than air craft for the first time. In 1969, man landed on the moon. Therefore, in 2001, man will have moon bases and be able to send a manned mission to Jupiter.
Sorry, it didn't work out like that.
Why not?
Because we haven't invented any new rocket fuels since the 60s, and conventional rocket fuels suck. All that Jetsons/Star Trek stuff was based on the theory that we would keep ramping up the curve at the same speed, but in reality, we hit a plateau and leveled off.
The same thing is already starting to happen to computers. Notice how the GHz race has slowed to a trickle? In 2000, Intel broke the GHz barrier with the Pentium III. Today, eight years later, I use a 2.1 GHz Core 2 Duo processor. Why is my chip "only" doing twice as many GHz? Because there's a brick wall and Intel is running up against it. The faster you go, the exponentially more heat you generate. Worse than that, no matter what cooling system you use, the fact is that 299,792,458 m/s / 1 cm = 29.9792458 GHz. That is, you can never get a signal from one side of a
Meanwhile, has science really been moving faster since the internet? QCD was invented before the internet. DNA was discovered and used for making insulin etc. before the internet. Dark matter was on the edge of the internet's coming into being, but dark matter is kind of just a mathematical kludge anyway. "Hey, our math doesn't work. So there must be more stuff here slowing things down (dark matter) and more energy there speeding things up (dark energy)." Our knowledge of dark matter and energy is very crude, almost like the view of the atom in Marie Curie's day.
In any event, the whole "singularity" movement strikes me as being the same eschatological nonsense that human beings have always believed. "OMG, a comet and an earthquake: it's the end of the world!!" No, it's not. For you personally, the end of the world will come in about 120 years max. (Aubrey de Grey is full of crap.) For the rest of the world, there's time enough for things to keep working themselves out. The Earth will keep orbiting the sun. Life will go on. AI researchers will continue to try to make a robot that can run around as well as a four year old. This too shall pass.
Re:But not as small as you think (Score:3, Insightful)
At any rate, I think we can both agree that there's a ways to go before we "run out of room at the bottom," but my suggestion is that the bottom may be closer than we think, perhaps even in the ballpark of just 100x current speeds (=speed doubling every 1.5 months for the next decade).