Anti-PT-symmetry-enhanced interconversion between microwave and optical fields

Abstract

The intrinsic dissipation of systems into a shared reservoir introduces coherence between two systems, enabling anti-Parity-Time (anti-PT) symmetry. In this paper, we propose an anti-PT symmetric converter, consisting of a microwave cavity coupled dissipatively to a ferromagnetic sphere, which supports significant improvements in the conversion efficiency when compared to coherently coupled setups. In particular, when only the ferrite sample is driven, the strong coherence induced by the vacuum of the mediating channel leads to much stronger enhancements in the intended conversion. The enhancement is an inalienable artifact of the emergence of a long-lived, dark mode associated with a quasi-real singularity of the hybrid system. In addition, we observe considerable asymmetry in the efficiencies of microwave-to-optical and optical-to-microwave conversions, in spite of the symmetrical structure of the trilinear optomagnonic coupling stimulating both the transduction phenomena. The nonreciprocity stems from the intrinsic asymmetry in the couplings of the microwave and optical fields to the cavity-magnon network as well as the phase coupling entailed by the spatial separation.

References in corpus (17)

• Strongly coupled magnons and cavity microwave photons
• Hybridizing ferromagnetic magnons and microwave photons in the quantum limit
• Hybrid quantum systems based on magnonics
• Nonreciprocal Photon Transmission and Amplification via Reservoir Engineering
• Spin Pumping in Electrodynamically Coupled Magnon-Photon Systems
• Strong magnetic coupling of an ultracold gas to a superconducting waveguide cavity
• A magneto-optic modulator with unit quantum effciency
• Unconventional Singularity in Anti-Parity-Time Symmetric Cavity Magnonics
• Cavity quantum electro-optics
• Dissipation-based Quantum Sensing of Magnons with a Superconducting Qubit
• Cavity mediated manipulation of distant spin currents using cavity-magnon-polariton
• Abnormal anti-crossing effect in photon-magnon coupling
• Enhanced sensing of weak anharmonicities through coherences in dissipatively coupled anti-PT symmetric systems
• Exceptional points in dissipatively coupled spin dynamics
• Nonlinear Spin Currents
• Ultralow threshold bistability and generation of long-lived mode in a dissipatively coupled nonlinear system: application to magnonics
• Induced transparency: interference or polarization?

Cited by in corpus (9)

• Cavity magnomechanics: from classical to quantum
• Stationary optomagnonic entanglement and magnon-to-optics quantum state transfer via opto-magnomechanics
• Anomalous Long-Distance Coherence in Critically-Driven Cavity Magnonics
• Cavity mediated level attraction and repulsion between magnons
• Enhancement of synthetic magnetic field induced nonreciprocity via bound states in continuum in dissipatively coupled systems
• 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
• Engineering bound states in continuum via nonlinearity induced extra dimension
• Enhancement of quantum sensing in a dissipatively coupled two-mode system