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Physicists Store, Retrieve a "Squeezed Vacuum"
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.
Yes. For the simplest example, the atmosphere is a gas of molecules, not atoms.
More generally, you can define a gas out of nearly any kind of particle. There's even such a thing as a "photon gas".
You can have gas made of molecules, a gas of photons, a gas of electrons, etc. As long as you have a large ensemble of free particles in a given volume you can call it a gas.
Formalize Formalism
Newton certainly isn't up there, plagiarism is is bad mmmkay!
Einstin would still be arguing with god over weather he rolls dice
And god doesn't exist/care!
IranAir Flight 655 never forget!
There are people alive right now that when they were born, germs were unknown
:)
Holy crap, there are people running around who are over 330 years old? Man, those guys have lived
At no time in history has information advanced so much in so short a time.
Actually, with a few notable exceptions, this has been true of any time in history. But yeah, there's a difference in degree.
sic transit gloria mundi
There are some possibilities to use quanta (?) as signal carriers, but no encryption is involved. The theory is that if you wiretap such a signal, then the original receiver will find out. So it could maybe be called "Quantum Wiretap Detection" or the like. But since this is a physical thing that relies on theoretical models that are typically not exact, it is not actually known whether this is really secure. I seem to remember that there are actually possibilities to liesten in, found in te last few months.
The reason for the encryption in the name is that the idea is to exchange a private key over the secure (but very slow) channel, which will then enable encryption over an insecure channel. So you're correct that the name is misleading. To be more accurate, it should be called quantum key exchange, not quantum encryption.
The laws of probability forbid it!
- DNA: 1951
- Human genome: same thing; the sequencing was completed in 2001.
- genetic medical treatments: not sure what you mean by that, but I'm not aware of any gene-based therapies in widespread use yet
- dark matter: OK, given, first conjectured to account for the bizarre result in the late 90s that showed the expansion of spacetime is accelerating.
- Hawking radiation: 1974.
- quantum? Depending which bit you're talking about, originates between the wars. Feynmann and Murray Gell-Mann described quantum chromodynamics in the 60s.
Nothing new under the sun, my friend.You're referring to http://en.wikipedia.org/wiki/Heisenberg's_microscope , however, that isn't actually what the uncertainly principle is about - but rather the non-commuting nature of the position and momentum operators on a fundamental level.
True.
So, it's not physically possible that for me to ever get a 30GHz Core 10 Quadro. It ain't gonna happen.
False. There is no rule that says a single processor has to be 0.5 cm in diameter. A processor 0.1 cm in diameter could clock at 150 GHz. Asynchronous logic boosts the effective clock rate even further.
Of course, these numbers are theoretical. In practice, whether they will be reached or exceeded will depend on many factors.