And the quantum world keeps on getting stranger and stranger

[Brady Kelly]

Andy Brummer wrote:

QM just isn't compatible with the way humans think, so the only tools we have for understanding it are mathematical.

Just like anything above three dimensions.

Elusive problem with IIS7 static content.

[Brady Kelly]

Thanks Pete, new sig material.

A SINGLE-PHOTON TURNSTILE, a device in which photons are emitted one at a time under controlled circumstances, has been created by a team of scientists from Stanford (US), Hamamatsu Photonics (Japan), and NTT (Japan). Essentially the researchers use the quantization of electrical conductance to produce a quantization of photon emission. They put together a quantum well (the frontier between two thin semiconductor layers) containing a single electron (other electrons are dissuaded from entering because of a "Coulomb blockade" effect) with a quantum well containing a lone (comparably Coulomb blockaded) hole, and then cycle the voltage across the whole stack of layers in such a way that the lone electron and lone hole meet, mate, and make a lone photon. The resulting device, which operates at mK temperatures, is typically a tiny post some 700 nm tall and with a diameter of 200-1000 nm. (J. Kim et al., Nature, 11 February 1999.)

[Andy Brummer]

Only when we try to think of it on the same terms as 3 spacial dimensions. We deal with plenty of higher dimensional spaces fairly regularly without realizing it, and the mathematics is the same. Quantum mechanics goes something along the lines of, take an absurdly high dimensional space and then do some weird kind of rotation operation on it and see how the lengths of everything changed. We'll call that a position measurement. Do the same thing with a related rotation and that's a measurement in a different direction. Do a really strangely weird rotation and we'll call that a momentum measurement. Take those operations and stick them together like it makes sense to do so and bam, you have energy. Make them into a differential equation and now you have motion. It all manages to be consistent, and make the most accurate predictions of any theory we've come up with, but absolutely nobody has any idea why any of it would be in the first place.

I can imagine the sinking feeling one would have after ordering my book, only to find a laughably ridiculous theory with demented logic once the book arrives - Mark McCutcheon

[Roger Wright]

Marc Clifton wrote:

predestination

I knew you were going to say that.

"A Journey of a Thousand Rest Stops Begins with a Single Movement"

[blackjack2150]

Marc Clifton wrote:

Quantum physics in general is quite interesting coupled with my interest in neurology, AI, and even more esoteric things like chance, fate, predestination, and so forth.

That enum reminded me of the movie "What the 'bleep' do we know?!" Have you seen it?

[macu]

I like chocolate.

[Pete OHanlon]

That's one cool sig.

Deja View - the feeling that you've seen this post before.

My blog | My articles

[Brady Kelly]

I wanted to edit it and higlight the bits about the lone electron and hole mating and producing a tiny post, but I can't click on it without following the link. But I couldn't.

A SINGLE-PHOTON TURNSTILE, a device in which photons are emitted one at a time under controlled circumstances, has been created by a team of scientists from Stanford (US), Hamamatsu Photonics (Japan), and NTT (Japan). Essentially the researchers use the quantization of electrical conductance to produce a quantization of photon emission. They put together a quantum well (the frontier between two thin semiconductor layers) containing a single electron (other electrons are dissuaded from entering because of a "Coulomb blockade" effect) with a quantum well containing a lone (comparably Coulomb blockaded) hole, and then cycle the voltage across the whole stack of layers in such a way that the lone electron and lone hole meet, mate, and make a lone photon. The resulting device, which operates at mK temperatures, is typically a tiny post some 700 nm tall and with a diameter of 200-1000 nm. (J. Kim et al., Nature, 11 February 1999.)

[hairy_hats]

Chris Austin wrote:

density

I thought that the "uniform over a large enough volume" approach was what they had found didn't work?

[Jose Derek]

The Bible says: "AS ABOVE AND SO BELOW." Anything is energy first before it manifested in the material plane.

[Gary Wheeler]

Charming :rim-shot:.

Software Zen: delete this;

[Lost User]

Entanglement is used in odd places in optical equipment even before people knew it was there.

Visit http://www.notreadytogiveup.com/[^] and do something special today.

[Dan Neely]

Brady Kelly wrote:

Pete O'Hanlon wrote: science geeks What other kind are there? [Cry]

science dorks, gun geeks, etc, etc, etc.

Today's lesson is brought to you by the word "niggardly". Remember kids, don't attribute to racism what can be explained by Scandinavian language roots. -- Robert Royall

[User 3830644]

Personally I like silly string.:cool:

[User 3830644]

Personally I like silly string (or the theory of it).

[Edgar Prieto]

Roger Wright wrote:

Marc Clifton wrote: predestination I knew you were going to say that.

I thought he will said Procastination

Edgar Prieto Software Engineer

[Mel Pama]

Just today I read an article in the CodeProject that states that they are progressing with the "Warp Drive". Mathematically speaking they will bend space by expanding it behind the space craft and contracting it in front of the space craft causing a space wave, like surfing. This will get the ship to the opposite end of the universe very quickly, at multiple times the speed of like: but the actual speed of the space craft will be stationary, thus not violating Einstein's theory of relativity. This is a result of further exploration of the string theory which a few prominent scientists have been working on. It is all mathematically feasible, however the energy required amounts to the energy of the planet of Pluto when totally changed into energy, ~10^45 Joules, which they say we wont be able to do for another few melenium. That's the part I hate because I won't be around to see it and go with them. Also, on a much smaller scale such as what you have been talking about, they have actually teleported a photon across town in Austria. The theory of entanglement is involved with this process. Once two photons have existed simultaneaously for a femtosecond they are forever associated and the one knows what the other "feels" or "does". This is somehow related with what you have been talking about. A good book on the subject is "Teleportation The Impossible Leap" by David Darling (Wiley Books). The CodeProjecy is obtainable at www.codeproject.com Mel :)

[Kevin McFarlane]

The experiments have been conducted for years as well. I think they just do more impressive experiments as time passes, rather as they do for relativity.

Kevin

[Kevin McFarlane]

Marc Clifton wrote:

Quantum entanglement is fascinating

As Richard Feynman said: "no-one understands quantum mechanics." (This was in response to the myth that no-one understands relativity.)

Kevin

[johannesnestler]

What i like about entanglement is that nearly everything is entangled with everything, resulting in a big "function" - the reality...