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The solutions show light tied in knots

Really cool topic. Here a link to a paper from Leiden's quantum optics group from 2008 about knotted light (I was in that group at the time): http://www.nature.com/nphys/journal/v4/n9/abs/nphys1056.html

knot theory ... any volunteers?

Physicists have devised a way to take pictures using light that has not interacted with the object being photographed. This form of imaging uses pairs of photons, twins that are 'entangled' in such a way that the quantum state of one is inextricably linked to the other.

The actual article: http://www.nature.com/nature/journal/v512/n7515/full/nature13586.html ScienceDaily version: "Scientists photograph the Schrödinger's cat for the first time!"

A nice article explaining the principle of quantum superposition from the double slits experience. Nothing new here but still interesting to read :)

I myself am quite a big fan of the one-electron universe paradigm :))) And of the cat cannon: http://www.askamathematician.com/2010/12/q-can-you-do-the-double-slit-experiment-with-a-cat-cannon/

In this article the authors describe an improvement of their optical microscope techniques for which some of the received a Nobel prize in the past. They achieve resolutions far beyond the optical diffraction limit which is supposed to limit detail resolution due to quantum-mechanical effects. Their techniques include structured illuminiation (producing interference patterns), switchable fluorescent markers as well as multi-frame super resolution enhancement. Authors are able to take a single image in about 0.3 seconds which allows the study of protein processes in the cell: http://spon.de/vgTb7 . Although it is hard to imagine the application of many of these techniques for telescopes (except for super resolution), I am wondering if any of this could help building telescopes with increased optical power or reduced weight. Any ideas..?

Quantum Cascade Lasers are rising in the mid-infrared region, the so-called fingerprint zone of the electromagnetic spectrum for a whole bunch of chemical species that we are most of times interested in sensing. One more sign of the underlying importance of this technology comes just by seeing NSF, USHS, Naval Air Command and NASA as the main monetary contributors to this research.

can't read the full paper from here but this looks really interesting!! Pacome, Luzi I am sure you will like it ...

an article about what Leopold posted some days ago. Very interesting indeed

crikey. one of those things you assume has been done already eh.

quantumphysics holds ....

interesting chinese paper ...

beam me up scottie!!

Apparently there is a project going on in ESA on this topic led by TEC-EP, the contact person is Evelyne Simon. I really would like to do some research on these topics to see if we can find something interesting that would not have been considered in this study.

That's the lab I worked...

just being cinical ... but did not we know that g = 9.809 in Paris? I can also create a complex measurement procedure that will held pi = 3.1415, just as expected!!!

well, sure... the interest of such gravimeter is to be absolute, and for now slightly more accurate than the other type of absolute gravimeter which uses retroreflector and interferometry ( http://en.wikipedia.org/wiki/Gravimeter ). While the latter ones reached their limit in term of sensitivity, the atomic ones can be enhanced in many ways (using cooler atoms, better optics, etc...)

another one...

Sorry for the German, but there is a link to the english paper as well: http://www.plosbiology.org/article/info%3Adoi%2F10.1371%2Fjournal.pbio.1000278 Following up on Martin's talk, I found that on the Austrian National Broadcaster website, well not really the top source for sound science news but anyway :)

The Schrodinger cat with drums, that's for Nik ;)

looks interesting - though not sure I would understand the full paper - do you have it?