Thursday, August 17, 2017

A New Era of Color Science

The secret behind feather iridescence lies in how tiny structures interfere with light. These structures are fine enough to produce color through the warping of light rather than pigmentation.
Understanding how color works at a structural level could be useful for the development of sensors in medical and security applications.
With all of this in mind, we can expect the world to become a lot more colorful in the next few years.
"We are on the threshold of a new era of color science, and the interdisciplinary nature of this collaborative enterprise holds enormous promise," the authors conclude.
The research is published in Science.

Physicists measure complementary properties using quantum clones

The old textbooks might make handy paperweights...

(—In quantum mechanics, it's impossible to precisely and simultaneously measure the complementary properties (such as the position and momentum) of a quantum state. Now in a new study, physicists have cloned quantum states and demonstrated that, because the clones are entangled, it's possible to precisely and simultaneously measure the complementary properties of the clones. These measurements, in turn, reveal the state of the input quantum system.

More information: G. S. Thekkadath, R. Y. Saaltink, L. Giner, and J. S. Lundeen. "Determining Complementary Properties with Quantum Clones." Physical Review Letters. DOI: 10.1103/PhysRevLett.119.050405, Also at arXiv:1701.04095 [quant-ph]