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Single-Pixel Imaging Technique to Measure Ultrafast Pulses azooptics.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from azooptics.com Daily Mail and Mail on Sunday newspapers.
New Technique to "Flip" the Optical Wavefront Prevents Distortions in Multimode Fibers azooptics.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from azooptics.com Daily Mail and Mail on Sunday newspapers.
E-Mail IMAGE: When a well-defined image propagates from the right-hand side to the left-hand side through a 1-km-long multimode fiber, its spatial profile and polarization will be strongly distorted. By flipping the. view more Credit: Illustration by Yiyu Zhou The use of multimode optical fibers to boost the information capacity of the Internet is severely hampered by distortions that occur during the transmission of images because of a phenomenon called modal crosstalk. However, University of Rochester researchers at the Institute of Optics have devised a novel technique, described in a paper in Nature Communications, to flip the optical wavefront of an image for both polarizations simultaneously, so that it can be transmitted through a multimode fiber without distortion. Researchers at the University of South Florida and at the University of Southern California collaborated on the project. ....
31 Dec 2020 10 - 9 - 8 - 7 - 6 - 5 - 4 - 3 - 2 - 1. Happy New Year! While the UK looks to Big Ben and the US have their Times Square pendulum, our New Year celebrations rely on pin point accurate timing. Now, a new kind of atomic clock, designed by MIT researchers, will enable even a half second off since the beginning of the Universe to seem like an unnecessary eternity. Entanglement-enhanced optical atomic clocks are no longer bound by the Standard Quantum Limit and will help enable physicists to decipher signals in the universe such as dark matter and gravitational waves. Atomic clocks are the most precise timekeepers in the world. These exquisite instruments use lasers to measure the vibrations of atoms, which oscillate at a constant frequency, like many microscopic pendulums swinging in sync. The best atomic clocks in the world keep time with such precision that, if they had been running since the beginning of the universe, they would only be off by about half ....
New type of atomic clock keeps time even more precisely December 19, 2020MIT The design, which uses entangled atoms, could help scientists detect dark matter and study gravity’s effect on time. Atomic clocks are the most precise timekeepers in the world. These exquisite instruments use lasers to measure the vibrations of atoms, which oscillate at a constant frequency, like many microscopic pendulums swinging in sync. The best atomic clocks in the world keep time with such precision that, if they had been running since the beginning of the universe, they would only be off by about half a second today. ....