Antiblockade

June 2, 2006 8:49 AM

Antiblockade in Rydberg excitation of an ultracold lattice gas
posted by ozomatli (58 comments total)

Abstract:
It is shown that the two-step excitation scheme typically used to create an ultracold Rydberg gas can be described with an effective two-level rate equation, greatly reducing the complexity of the optical Bloch equations. This allows us to solve the many-body problem of interacting cold atoms with a Monte Carlo technique. Our results reproduce the Rydberg blockade effect. However, we demonstrate that an Autler-Townes double peak structure in the two-step excitation scheme, which occurs for moderate pulse lengths as used in the experiment, can give rise to an antiblockade effect. It is observable in a lattice gas with regularly spaced atoms. Since the antiblockade effect is robust against a large number of lattice defects it should be experimentally realizable with an optical lattice created by CO₂ lasers.
posted by ozomatli at 8:49 AM on June 2, 2006

exactly.
posted by StrasbourgSecaucus at 8:50 AM on June 2, 2006

Weird, I came up with the same idea while sitting on the john yesterday.
posted by brain_drain at 8:55 AM on June 2, 2006

MetaFilter: Allows us to solve the many-body problem.

P.S. Oz wins the steel cage match against the tag team of Dios and Moju. Gratz, Oz!
posted by The Bellman at 8:56 AM on June 2, 2006

patently ridiculous, you should be burned at the stake like a witch
posted by poppo at 8:56 AM on June 2, 2006

Bitchin ... in the words of Gerry Lopez.
posted by Relay at 8:56 AM on June 2, 2006

Point made. The worst possible consequence is if this -isn't- deleted.
posted by anotherpanacea at 8:59 AM on June 2, 2006

Are you shittin me?
posted by tellurian at 8:59 AM on June 2, 2006

Well I think using the optical Bloch equations is not the best way to go about solving the problem. By getting rid of the wavefunction characterstic of the system you lose the information needed if you want applications if quiantum computing.
posted by ozomatli at 9:00 AM on June 2, 2006

... you are trying to do some sort of demonstration or trying to prove a point by posting to mefi. Wikipedia has a great guideline about this. Don't (ab)use MetaFilter to make your point.
posted by matthewr at 9:01 AM on June 2, 2006

That's nothing a little poop freeze wouldn't fix.
posted by ewagoner at 9:01 AM on June 2, 2006

Metafilter: Pe(t,∆)=P∞(∆) 1−exp − γ(∆)t P∞(∆)
posted by planetkyoto at 9:02 AM on June 2, 2006

While the tags associated with the FPP give some indication what the consequences of this breakthrough may be, I am still mightily against one-link-to-a-PDF FPPs. Then again, they have lasers at the Max Planck Institute. Maybe I should remain silent.
posted by bastionofsanity at 9:02 AM on June 2, 2006

hopefully there will be a 180-post MeTa thread for this one, too, when it's deleted.
posted by StrasbourgSecaucus at 9:02 AM on June 2, 2006

So, you are.
posted by tellurian at 9:03 AM on June 2, 2006

What is the best way?
posted by grobstein at 9:04 AM on June 2, 2006

What, is the arXiv server the next digg or boingboing? Where's the frick'n via? HUH?
posted by fatllama at 9:06 AM on June 2, 2006

clearly this is bush's fault
posted by pyramid termite at 9:07 AM on June 2, 2006

What is the best way?
posted by grobstein at 11:04 AM CST on June 2 [+fave] [!]

I dunno about it being the best way, but hey just solve the time dependent schrodingers equation straight up. That way you still have the wavefunction. Sure you will have to do some clever stuff with the basis set, but it can be done.
posted by ozomatli at 9:08 AM on June 2, 2006

Okay, you're not shittin me. I assume this will come into effect.
posted by tellurian at 9:09 AM on June 2, 2006

Chilling.
posted by Mr. Six at 9:11 AM on June 2, 2006

I wish I knew enough about the topic at hand to make a witty aside about how completely fucking annoying this post is, preferably in the form of a formula using arcane symbols.
posted by jack_mo at 9:14 AM on June 2, 2006

I thought this was going to be a post of a funny translation on babelfish. In the few seconds it took me to click, I was thinking: headline about the Rydberg police shutting down a traffic-blocking protest with a new, crowd-dispersing cold-gas.

Color me disappointed.
posted by anotherpanacea at 9:15 AM on June 2, 2006

Yes, but what about the quantum properties of Pepsi Blue ? Also the more I know about Pepsi Blue, the less I can accurately locate a can of it !
posted by elpapacito at 9:15 AM on June 2, 2006

Hey, leave the guy alone. I'm sure that ozomatli reads a lot of these pdfs, and just wanted to share something interesting with the rest of us.
posted by graventy at 9:16 AM on June 2, 2006

Can I just get some frickin sharks with lasers on their heads?
posted by tadellin at 9:16 AM on June 2, 2006

quiantum

Faker.
posted by sonofsamiam at 9:16 AM on June 2, 2006

jack_mo writes "I wish I knew enough about the topic at hand to make a witty aside about how completely fucking annoying this post is, preferably in the form of a formula using arcane symbols."

I've got to review my APL so I can contribute lines of arcane symbology.
posted by Mitheral at 9:18 AM on June 2, 2006

i've got to kidnap a chemist and make him explain this to me
posted by pyramid termite at 9:20 AM on June 2, 2006

i've got to kidnap a chemist and make him explain this to me
posted by pyramid termite at 11:20 AM CST on June 2 [+fave] [!]

Chemist? You don't need no chemisty for this.
posted by ozomatli at 9:24 AM on June 2, 2006

graventy: yep Jesus is a doctoral student in physics, so I guess the pdf he is point to is interesting somehow. I like the fact he trusts mefites to be above average intelligent readers, able to appreciate the paper. I hope he will not be deluded by the incessant making fun of his posting :-) which is just an emotive reaction of embarassed ignorance :)
posted by elpapacito at 9:25 AM on June 2, 2006

I for one welcome our new ultracoid overlords.
posted by T.D. Strange at 9:26 AM on June 2, 2006

on preview:

i've got to kidnap a chemist and make him explain this to me
posted by pyramid termite at 11:20 AM CST on June 2 [+fave] [!]

At your level, you need Jesus !
posted by elpapacito at 9:27 AM on June 2, 2006

This post might as well be in an obscure and extinct dialect from the island of Shmoo. What's the point?
posted by 517 at 9:27 AM on June 2, 2006

*looks at chemist tied up in chair, glaring at me*

fuck it, i'm not kidnapping another guy, he's just going to have to change disciplines
posted by pyramid termite at 9:30 AM on June 2, 2006

Exinct? Not in our hearts.
posted by ozomatli at 9:31 AM on June 2, 2006

and i should give a crap about this post because....? please try harder.
posted by gnutron at 9:35 AM on June 2, 2006

by the way, did anyone notice what a huge SCIENCE PENIS ozomatli has?
posted by pyramid termite at 9:36 AM on June 2, 2006

I eagerly await the follow-on FPP from someone on your IM buddy list.
posted by Armitage Shanks at 9:38 AM on June 2, 2006

I can't even makeup a word anymore.
posted by 517 at 9:39 AM on June 2, 2006

The shmoo is shaped like a plump bowling pin with legs, but no arms. They reproduce asexually, and are very prolific. They require no sustenance other than air. Shmoos are delicious, and are so eager to be eaten that if they are looked at by someone who is hungry they will gladly jump into a frying pan, after which it tastes like chicken, or into a roasting pan, after which it tastes like beef. They also produce eggs, milk, and butter (no churning labor needed.) Their fresh pelt is a perfect boot leather, or house timber depending on how thick it has been cut. Their eyes are ideal suspender buttons, and their whiskers are perfect toothpicks.

EXPLAIN THAT, SCIENCE!
posted by brain_drain at 9:40 AM on June 2, 2006

Having read the article, ozomatli, you suck. This is not very interesting, not even for physics-educated laymen. Possibly for someone doing actual work in this specific area.
posted by sonofsamiam at 9:42 AM on June 2, 2006

Is this something I would need a superlaser to understand?
posted by Drexen at 9:47 AM on June 2, 2006

i am educated stupid
posted by gigawhat? at 9:52 AM on June 2, 2006

Not analogous at all, oz. Metafilter as performance art is hard.
posted by boo_radley at 9:52 AM on June 2, 2006

Is there a youtube link that can illustrate this?
posted by horsewithnoname at 9:54 AM on June 2, 2006

i am so sick of daily arxiv links

god forbid we actually have an intelligent discussion
posted by Optimus Chyme at 9:54 AM on June 2, 2006

Thanks. The site desperately needed an opportunity for a referrendum on dios.
posted by yerfatma at 9:55 AM on June 2, 2006

A what of a what in a what-what? Is it Feel Stupid Friday and no one told me?
posted by chuma at 9:58 AM on June 2, 2006

Some background on ultracold plasmas and Rydberg gasses, for the lay scientists among you who might actually be interested in the subject.
posted by louigi at 10:00 AM on June 2, 2006

elpapacito: All he's looking for is a little intelligent discourse on a topic he thought was interesting. Surely, Metafilter is above complaints about formats and such and can cut straight to the heart of the issue: now that a Monte Carlo technique can be used to solve the many-body problem of interacting cold atoms, what does the future hold in store for us?
posted by graventy at 10:01 AM on June 2, 2006

I can see why it was deleted, but if it wasn't would I cry over it? No, but it reeks to me of someone trying to make a point.
posted by ozomatli at 2:35 PM EST on June 1 [+fave] [!]

Bolding mine.
posted by smackfu at 10:02 AM on June 2, 2006

I'm sure this was all a dreadful mistake, my friends. Haven't you ever accidentally posted an abstract to Metafilter by mistake when you were aiming for, say, some physics discussion board? I'm sure Ozomatli was just typing while drunk, although it's a little early in the day for that. Unless Osomatli is from Libya. I don't care what Bush says, Libya was a damn fine enemy.
posted by kozad at 10:03 AM on June 2, 2006

posted by caddis at 10:04 AM on June 2, 2006

Did any of you naysayers even RTFA?!

OK, I didn't either.
posted by gigawhat? at 10:08 AM on June 2, 2006

Did any of you naysayers even RTFA?!

as soon as babelfish includes urgeeksprache as one of its languages, i assure you i will
posted by pyramid termite at 10:12 AM on June 2, 2006

patently ridiculous, you should be burned at the stake like a witch


posted by Alvy Ampersand at 10:13 AM on June 2, 2006

Alvy, you just made it onto my favourite posters list.
posted by Krrrlson at 10:15 AM on June 2, 2006