A new discovery shows that messy, stray light can be used to clean up quantum systems instead of disrupting them. University of Iowa researchers found that unwanted photons produced by lasers can be ...

Semiconductor detectors that directly measure the electrical signals produced by X-rays have hugely improved the resolution and contrast of computed tomography scanners. In the 1970s computed ...

IN a paper under this title which has recently appeared, 1 we have described and discussed observations which have led us to the conclusion that the light quantum possesses an intrinsic spin equal to ...