Cooperative-effect-induced one-way steering in open cavity magnonics

Abstract We propose to generate and control stationary one-way steering with strong entanglement between photon magnon modes by the cooperative effect of coherent coupling dissipative coupling. Due combination two couplings, system becomes a parity-time-like symmetric non-Hermitian system, exceptional points (EPs)-like appear in real imaginary parts eigenvalues. demonstrate that especially obvious quantum perfect can be obtained around EPs-like. The continuous variable produced this show stronger robustness environment temperature dissipation than induced nonlinearity. directivity controlled relative phase frequency detuning mode. Our work shows controllability advantage open cavity magnonic may up platform for generation steering.