Magnon-mediated multi-channel high-order sideband generation in cavity magnonics

Abstract

Abstract We propose a scheme to describe magnon-mediated multi-channel high-order sideband generation in a cross cavity magnonic system. The high-order sideband generation is composed of equally spaced discrete output frequency components, which is essential tools for light communication, precision metrology, timing and spectroscopy. Beyond the generally linearized description by using the perturbative method, we deal with the Heisenberg–Langevin equations in the non-perturbative regime to obtain the output spectrum of high-order sidebands. Unlike conventional methods of using power that requires externally adjustable incident beams, here we demonstrate magnon-mediated high-order sideband generation in a cavity magnonic device by utilizing its intrinsically good tunability. Furthermore, until now most of the work in cavity magnonics is mainly restricted to the frequency/time domain, while we realize the modulation of sideband effects by the manipulation of cavity-magnon polaritons in real space, that is the external magnetic field with a tunable angle. By tuning the angle, we can obtain multi-channel high-order sideband generation, which may offer the potential for selectively transferring coherent information processing technologies.