Cavity optomechanics, a promising platform to investigate macroscopic quantum effects, has
been widely used to study nonreciprocal entanglement with the Sagnac effect. Here, we …

Strong long-range coupling between distant spins is crucial for spin-based quantum
information processing. However, achieving such a strong spin-spin coupling remains …

Non-Hermiticity has emerged as a new paradigm for controlling coupled-mode systems in
ways that cannot be achieved with conventional techniques. One aspect of this control that …

Exceptional points are degeneracies in the spectrum of non-Hermitian open systems where
at least two eigenfrequencies and simultaneously the corresponding eigenstates of the …

Nonradiative wireless power transfer (WPT) technology has made considerable progress
with the application of the parity-time (PT) symmetry concept. In this Letter, we extend the …

We show how to enhance the detection sensitivity of magnon Kerr nonlinearity (MKN) in
cavity magnonics. The considered cavity-magnon system consists of a three-dimensional …

Strong long-distance spin-magnon coupling is essential for solid-state quantum information
processing and single-qubit manipulation. Here, we propose an approach to realize strong …

Higher-order exceptional points (EPs) in non-Hermitian systems have attracted great interest
due to their advantages in sensitive enhancement and distinct topological features …

Real eigenvalues of pseudo-Hermitian matrices, such as real matrices and PT− symmetric
matrices, frequently split into complex conjugate pairs. This is accompanied by the breaking …

The effect of non-Hermiticity in band topology has sparked many discussions on non-
Hermitian topological physics. It has long been known that non-Hermitian Hamiltonians can …