Ultralow threshold bistability and generation of long-lived mode in a dissipatively coupled nonlinear system: application to magnonics

Abstract

The prospect of a system possessing two or more stable states for a given excitation condition is of topical interest with applications in information processing networks. In this work, we establish the remote transfer of bistability from a nonlinear resource in a dissipatively coupled two-mode system. As a clear advantage over coherently coupled settings, the dissipative nature of interaction is found to support a lower pumping threshold for bistable signals. For comparable parameters, the bistability threshold for dissipatively coupled systems is lower by a factor of about five. The resulting hysteresis can be studied spectroscopically by applying a probe field through the waveguide and examining the polariton character of the transmitted field. Our model is generic, apropos of an extensive set of quantum systems, and we demonstrate our results in the context of magnonics where experimental interest has flourished of late. As a consequence of dissipative coupling and the nonlinearity, a long-lived mode emerges, which is responsible for heightened transmission levels and pronounced sensitivity in signal propagation through the fiber.

8 pages, 8 figures

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Cited by in corpus (14)

• Quantum magnonics: when magnon spintronics meets quantum information science
• Detection sensitivity enhancement of magnon Kerr nonlinearity in cavity magnonics induced by coherent perfect absorption
• Generation of long-lived $W$ states via reservoir engineering in dissipatively coupled systems
• Bistability in dissipatively coupled cavity magnonics
• Cavity mediated level attraction and repulsion between magnons
• Pseudo-Hermiticity protects the energy-difference conservation in the scattering
• Anti-PT-symmetry-enhanced interconversion between microwave and optical fields
• Kerr nonlinearity induced strong spin-magnon coupling
• Topological transitions in dissipatively coupled Su-Schrieffer-Heeger models
• Quantum amplification of spin currents in cavity magnonics by a parametric drive induced long-lived mode
• Enhanced sensing of optomechanically induced nonlinearity by linewidth suppression and optical bistability in cavity-waveguide systems
• Explosive growth of bistability in a cavity magnonic system
• Engineering bound states in continuum via nonlinearity induced extra dimension
• Realizing on-demand all-to-all selective interactions between distant spin ensembles