Hybridizing ferromagnetic magnons and microwave photons in the quantum limit

Abstract

We demonstrate large normal-mode splitting between a magnetostatic mode (the Kittel mode) in a ferromagnetic sphere of yttrium iron garnet and a microwave cavity mode. Strong coupling is achieved in the quantum regime where the average number of thermally or externally excited magnons and photons is less than one. We also confirm that the coupling strength is proportional to the square root of the number of spins. A nonmonotonic temperature dependence of the Kittel-mode linewidth is observed below 1 K and is attributed to the dissipation due to the coupling with a bath of two-level systems.

5 pages, 4 figures

References in corpus (6)

• Spin Seebeck insulator
• Strongly coupled magnons and cavity microwave photons
• Strong Coupling of a Spin Ensemble to a Superconducting Resonator
• Quantum computing with an electron spin ensemble
• Anisotropic rare-earth spin ensemble strongly coupled to a superconducting resonator
• Probing dynamics of an electron-spin ensemble via a superconducting resonator

Cited by in corpus (64)

• Strongly coupled magnons and cavity microwave photons
• Quantum technologies with hybrid systems
• Hybrid quantum systems based on magnonics
• High Cooperativity Cavity QED with Magnons at Microwave Frequencies
• Spin Pumping in Electrodynamically Coupled Magnon-Photon Systems
• Observation of the exceptional point in cavity magnon-polaritons
• Magnon Kerr effect in a strongly coupled cavity-magnon system
• Hybrid magnonics: physics, circuits and applications for coherent information processing
• Exchange Magnon-Polaritons in Microwave Cavities
• A magneto-optic modulator with unit quantum effciency
• Magnon Blockade in a Hybrid Ferromagnet-Superconductor Quantum System
• Unconventional Singularity in Anti-Parity-Time Symmetric Cavity Magnonics
• 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
• Magnon-phonon interactions in magnetic insulators
• Theory of the magnon Kerr effect in cavity magnonics
• Study of strong photon-magnon coupling in a YIG-film split-ring resonant system
• Resources of nonlinear cavity magnonics for quantum information
• Exceptional magnetic sensitivity of PT-symmetric cavity magnon polaritons
• Control of the magnon-photon level attraction in a planar cavity
• Perspective on Metallic Antiferromagnets
• Magnetic spheres in microwave cavities
• Exceptional Point and Cross-Relaxation Effect in a Hybrid Quantum System
• Identification of spin wave modes strongly coupled to a co-axial cavity
• Indirect coupling of magnons by cavity photons
• Dispersive read-out of ferromagnetic resonance for strongly coupled magnons and microwave photons
• Cavity magnomechanical storage and retrieval of quantum states
• Optical manipulation of a magnon-photon hybrid system
• YBCO microwave resonators for strong collective coupling with spin ensembles
• Travelling photons mediated interactions between a magnon mode and a cavity photon mode
• 3D Cavity quantum electrodynamics with a rare-earth spin ensemble
• Optimal mode matching in cavity optomagnonics
• Cavity-mediated dissipative spin-spin coupling
• Low spin wave damping in the insulating chiral magnet Cu${}_2$OSeO${}_3$
• Low-impedance superconducting microwave resonators for strong coupling to small magnetic mode volumes
• Radiative cooling of a superconducting resonator
• Phase-controlled pathway interferences and switchable fast-slow light in a cavity-magnon polariton system
• Normal-mode splitting in the coupled system of hybridized nuclear magnons and microwave photons
• Non-Markovian dynamics of a single-mode cavity strongly coupled to an inhomogeneously broadened spin ensemble
• Circulating cavity magnon polaritons
• Strong magnon-photon coupling within a tunable cryogenic microwave cavity
• Interference control of perfect photon absorption in cavity quantum electrodynamics
• Magnon-phonon relaxation in yttrium iron garnet from first principles
• Nonlinear Spin Currents
• Low loss spin wave resonances in organic-based ferrimagnet vanadium tetracyanoethylene thin films
• Enhancing the spin-photon coupling with a micromagnet
• Surface dynamics of rough magnetic films
• Transient Response of the Cavity-Magnon-Polariton
• Simultaneous Optical and Electrical Spin-Torque Magnetometry with Stroboscopic Detection of Spin-Precession Phase
• Towards hybrid circuit quantum electrodynamics with quantum dots
• Linking Magnon-Cavity Strong Coupling to Magnon-Polaritons through Effective Permeability
• Interplay of magnetization dynamics with microwave waveguide at cryogenic temperatures
• Berry curvature for coupled waves of magnons and electromagnetic waves
• Rigorous numerical study of strong microwave photon-magnon coupling in all-dielectric magnetic multilayers
• Quantum Simulation of the Fermion-Boson Composite Quasi-Particles with a Driven Qubit-Magnon Hybrid Quantum System
• Electrical detection of magnon-photon interaction via auxiliary spin wave mode
• Excitation and detection of propagating spin waves at the single magnon level
• Negative Gilbert damping in cavity optomagnonics
• Universal $1/3$-suppression of magnonic shot noise in diffusive insulating magnets
• Sub-pico-liter magneto-optical cavities
• Macroscopic quantum superposition of spin ensembles with ultra-long coherence times via superradiant masing
• Detection of Ferromagnetic Resonance from 1 nm-thick Co
• Control of magnon-photon coupling strength in a planar resonator/YIG thin film configuration