Precise control of coupling strength in photonic molecules over a wide range using nanoelectromechanical systems.

ABSTRACT: Photonic molecules have a range of promising applications including quantum information processing, where precise control of coupling strength is critical. Here, by laterally shifting the center-to-center offset of coupled photonic crystal nanobeam cavities, we demonstrate a method to precisely and dynamically control the coupling strength of photonic molecules through integrated nanoelectromechanical systems with a precision of a few GHz over a range of several THz without modifying the nature of their constituent resonators. Furthermore, the coupling strength can be tuned continuously from negative (strong coupling regime) to zero (weak coupling regime) and further to positive (strong coupling regime) and vice versa. Our work opens a door to the optimization of the coupling strength of p

SUBMITTER: Du H 

PROVIDER: S-EPMC4838863 | biostudies-literature | 2016 Apr

REPOSITORIES: biostudies-literature