Wireless power transfer—the transmission of electromagnetic energy without physical
connectors such as wires or waveguides—typically exploits electromagnetic field control …

This report on progress explores recent advances in our theoretical and experimental
understanding of the physics of open quantum systems (OQSs). The study of such systems …

Exceptional points (EP) are non-Hermitian degeneracies where eigenvalues and their
corresponding eigenvectors coalesce,,–. Recently, EPs have attracted attention as a means …

Considerable progress in wireless power transfer has been made in the realm of non-
radiative transfer, which employs magnetic-field coupling in the near field,,,. A combination …

A major challenge for practical wireless power transfer (WPT) applications is to attain stable
power transfer with high and constant transfer efficiency under a dynamic change of …

Harnessing parity–time symmetry with balanced gain and loss profiles has created a variety
of opportunities in electronics from wireless energy transfer to telemetry sensing and …

We introduce here the concept of acoustic parity-time (PT) symmetry and demonstrate the
extraordinary scattering characteristics of the acoustic PT medium. On the basis of exact …

Exceptional points are degeneracies in physical systems at which both the underlying
eigenvalues and eigenvectors of the system coalesce. They originated in theoretical …

Wireless sensors based on micromachined tunable resonators are important in a variety of
applications, ranging from medical diagnosis to industrial and environmental monitoring …

An exceptional point (EP) is a non-Hermitian degeneracy where both eigenvalues and their
corresponding eigenvectors coalesce. It was recently proposed and demonstrated that such …