April 25, 200521 yr Kywalker wont find this funny, but he might find it interesting: This is a campus email I recieved inviting students to attend a seminar being put on by the physics and optical engineering department. My braincell hurt just trying to decipher what the meeting was all about. Everyone welcome - Refreshments will be served. DEPARTMENT OF PHYSICS AND OPTICAL ENGINEERING ROSE-HULMAN INSTITUTE OF TECHNOLOGY Faculty Candidate Dr. Renu Tripathi Northwestern University Evanston, IL Friday, April 22, 2005 9th period, 3:25 p.m. CL 119 Electromagnetically Induced Transparency: Applications in Slow Light based Rotation Sensing and Quantum Information Processing ABSTRACT *Electromagnetically induced transparency (EIT) in dressed atomic medium has attracted considerable attention in recent years for various applications such as resonantly enhanced optical nonlinearity, sub-Doppler laser cooling, and quantum information processing etc. Steep dispersion introduced by EIT in material medium gives rise to the phenomena of slow light, where the speed or group velocity of light in the medium can be reduced by many orders of magnitude less than speed of light in vacuum. I will describe experiments on slow light using EIT in rare earth solids and in hot dilute vapor medium. This will be used in a precision rotation sensing and interferometry. I will discuss an ongoing experimental effort towards nanofabrication of photonic microcavities in nitrogen vacancy diamond for quantum computing applications, and describe a potential design for scalable quantum computing architecture using spatial and spectral selectivity of inhomogeneously broadened color centers and atom-cavity coupling. I will also discuss a holographic lithographic technique for fabricating three-dimensional photonic bandgap structures. Refreshments will be served prior to the colloquium
April 25, 200521 yr Author I have commenced work on translating the email into real or at least slightly more understandable English. Ill bet Kywalker can do it much faster and much more accurately off the top of his head than i can with my mind and Google Starting with the title, here is what I got so far: Electromagnetically Induced Transparency: Applications in Slow Light based Rotation Sensing and Quantum Information Processing OK, so EIT is a process related too, if not exactly, a Bose-Einstein Condensate. I have heard of those before, essentially lasers and magnets are used to hold and cool a cloud of atoms (usually Rubidium) into one single "Super Atom" in which all the atoms behave the same way, similar to the way in which photons all act the same way in a Laser. Apparently, a byproduct of this is that the light shone on the BEC slows down by a crapload, even as low as 0. In essence, a light trap. Another byproduct or direct result of a BEC is that an opaque cloud of atoms suddenly becomes transparent, Hence electromagnetically induced transparency. The subtitle apparently has to do with the lecturer wanting to explore possible uses for the slow light generated by EIT/BEC's, including ultra accurate measurement of rotation and possible uses in Quantum computers. Kywalker, feel free to tear this to pieces, Im rather curious about this topic (or as much of it as I can understand)
April 25, 200521 yr Im studying Solid State physics, rather than Optoelectronics... hence not all keywords are crystal-clear right now... but i get the overall meaning i think. Still... i find that interesting (notice its 1:30am here and i was just about to go to bed damnit). I dont quite get that opaqueness-to-transparency effect - all the electrons in BEC freeze out - there are none excited and since the main reason of solid-state color are interactions with plasmons, then the material could go transparent? There has to be some other effect. Maybe freezing out of the phonons... *shrug* dunno. Also i still dont get the light-trap yet... but i think this has more to do with my lack of knowledge in quantum electrodynamics and/or quantum field theory. Wait.... after some thought (and a few drinks of water) i find it hard to believe that light slow-down and transparency can go hand in hand. If light slows down to 0 (huh????????) how can the solid become transparent? Also the term 'rotation sensing' troubles me. For if the interactivity of the light is diminished (transparency) how can we measure any rotation? There has to be some lower-level interaction (with nuclei? nuclei net?) that polarizes the light. As for possible applications... if we can induce BEC at temperatures a little bit (by few degrees os magnitude) higher than 0.000001K, than this COULD have possible applications (although i dont know what). THat is IF this process is related to BEC. Still, not my pair of shoes, although interesting. If you have something more, we could discuss it. I can give it more thought or can go speak with optoelectronicians... if i will have the time to do it. PS whats so 'hilarious' in that? Many specialised words? Get used to it.
April 25, 200521 yr Author thanks for the input : ) Ill continue my attempts at "translation" As for why its funny? Primarily because some MIT students recently used a computer program to randomly generate a "research paper" using basic grammar and confusing technical terms for a computer research symposium, and the paper was actually accepted. This email uses a similar cloud of barely understandable terminology except that it is actually legit. The parallel I saw was how even scientists can get caught in their own muddled love affair with technical terms and be confused by them. The author of the email seems to have their own obsession with making things unintelligable. Also, the lecturer is from Northwestern, a university commonly concieved as being a preppy school for people with superiority complexes
April 25, 200521 yr Remember that fancy words describing stuff you dont understand usually have simple enough explanations we can all get. This benefits the low self esteme Dr's and the like by making them feel more important. Also to their benefeit. Having these words in their vocabulary cuts down on the amount of speaking/typing one does. Translating that above paragraph so we can all understand would take up a huge amount of paper.
April 26, 200521 yr Interesting, what I could sort of understand. High mag field/gravity of black holes, high density center holds in light, so, posiibly possible. Reminds me of U.S. Navy experiments many "light" yrs ago, to make ship invisible from radar and/or sight by generating very very powerful electro-magnetic field around it. What seems to have leaked out from that, dunno if true, is it was atleast reduced to much smaller radar image, if not none at all. Their early experiments with stealth. Freaky is the supposed news leak that much damage was caused by this strong field to ship and shipmates. Including one or more mate found "fused" halfway thru and to deck. Others appeared many miles away on land dazed and confused how they got there. Suggesting maybe they somehow teletransported there. But my guess is they ended up overboard and drifted to land. Some amazing things can be done i believe with right combination of magfield frequency and power, mixed with certain freqs and power of other influences like microwaves. But mag fields from cells, power lines, etc bad for us long term, so only good for remote-controlled vehicles. Hmmm. Verly interestink. We working with these now. Reminds me of reports of supposed ufo's appearing to have oppositely fast rotating rings of lights on their bottoms. And even Ezekiel in Old Testemant reported same thing when in his words he thought he was looking up at angels.
April 26, 200521 yr Author the philadelphia project was bizarre, the ship the they supposedly used is still in dock. I think you can go see it. (USS Ellis or Ellison?)
April 26, 200521 yr Remember that fancy words describing stuff you dont understand usually have simple enough explanations we can all get. This benefits the low self esteme Dr's and the like by making them feel more important. :o Also to their benefeit. Having these words in their vocabulary cuts down on the amount of speaking/typing one does. Translating that above paragraph so we can all understand would take up a huge amount of paper. Good points Mac. This guy is interviewing for a faculty appointment, so the presentation is like a job interview, and likely an extremely competitive one. It must be that time of year... I had one come through my inbox the other day as well. The concepts are simple enough here, but there sure is some fluffy language. "Existing Approaches to Network Security" by Dr. Mukul Gupta Thursday, April 21, 2005 1:45 p.m. - 2:45p.m. SL 220A Abstract: Dr. Gupta will briefly present the existing approaches to security with emphasis on network security. While a very structured and layered approach is used for network and information system design, organizations tend to have a very independent and dichotomous view between the two resulting in inherent lack of integration. The paradigm of trustworthy computing is rising in popularity because of its comprehensiveness. Dr. Gupta will present a layered structure framework for evaluating various security threats and solutions. I guess that's why they get paid the big bucks .
April 26, 200521 yr Remember that fancy words describing stuff you dont understand usually have simple enough explanations we can all get. This benefits the low self esteme Dr's and the like by making them feel more important. :o Also to their benefeit. Having these words in their vocabulary cuts down on the amount of speaking/typing one does. Translating that above paragraph so we can all understand would take up a huge amount of paper. Of course it is true. These are keuwords that hold vast amount of knoledge behind them. Speaking keyword is supposed to induce the feeling that we actually know what is going on. Otherwise exams would take HUGE amounts of time. After a while in this, we start to get intuitions at what is right and what is not yet right.
April 26, 200521 yr I asked around. No student i know ever heard of it. Currently i have to time to submerge in this mystery, but if one finds an explanation to the phenomenon, ill gladly read.
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.