Comments on: Refrigeration by filtering http://bit-player.org/2006/refrigeration-by-filtering An amateur's outlook on computation and mathematics. Wed, 08 Feb 2012 13:30:07 +0000 http://wordpress.org/?v=2.6.3 By: Paul Horwitz http://bit-player.org/2006/refrigeration-by-filtering#comment-697 Paul Horwitz Tue, 25 Jul 2006 20:48:47 +0000 http://bit-player.org/?p=43#comment-697 It seems to me that there's a fourth way to refrigerate that may not have been considered. If starting from a reasonably collimated beam of relatively cold atoms (read: atoms with a deBroglie wavelength of the same order of magnitude as the diffraction grating described below), than it ought to be possible to constuct a diffraction grating that would work on the atoms in the same way that normal gratings work on light -- i.e., disperse them in different directions depending on their wavelength. For light this results in the creation of "rainbows" of different colors; for atoms, it means separating cold ones from hot ones. It seems to me that there’s a fourth way to refrigerate that may not have been considered. If starting from a reasonably collimated beam of relatively cold atoms (read: atoms with a deBroglie wavelength of the same order of magnitude as the diffraction grating described below), than it ought to be possible to constuct a diffraction grating that would work on the atoms in the same way that normal gratings work on light — i.e., disperse them in different directions depending on their wavelength. For light this results in the creation of “rainbows” of different colors; for atoms, it means separating cold ones from hot ones.

]]> By: Neal Kalechofsky http://bit-player.org/2006/refrigeration-by-filtering#comment-688 Neal Kalechofsky Tue, 25 Jul 2006 01:18:08 +0000 http://bit-player.org/?p=43#comment-688 Dear Brian: That's some company you've put Bill and myself in! I'm not sure I'm comfortable with "nanochannel refrigeration" having to live up to such billing, but I certainly appreciate our work being noticed. btw it's interesting that this is evidently a site primarily dedicated to computer science since ultimately the application for a "nanochannel refrigerator" would be to create an environment in which a quantum computer could operate. Dear Brian:

That’s some company you’ve put Bill and myself in! I’m not sure I’m comfortable with “nanochannel refrigeration” having to live up to such billing, but I certainly appreciate our work being noticed.

btw it’s interesting that this is evidently a site primarily dedicated to computer science since ultimately the application for a “nanochannel refrigerator” would be to create an environment in which a quantum computer could operate.

]]> By: Dinos Gonatas http://bit-player.org/2006/refrigeration-by-filtering#comment-687 Dinos Gonatas Tue, 25 Jul 2006 01:05:17 +0000 http://bit-player.org/?p=43#comment-687 still sounds like a Maxwell demon to me! still sounds like a Maxwell demon to me!

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