Feature
The Nonreciprocal Adventures of Light
Reciprocity of light and energy transport is not a fundamental law—and breaking it can enable the “one-way” flow of optical energy, unlocking applications in energy harvesting, signal processing and thermal-emission control.
“Go back? No good at all! Go sideways? Impossible! Go forward? Only thing to do! On we go!”
—Bilbo Baggins, Esq.
Log in or become a member to view the full text of this article.
This article may be available for purchase via the search at Optica Publishing Group.
Optica Members get the full text of Optics & Photonics News, plus a variety of other member benefits.