Enhancement of antiferromagnetic magnon-magnon entanglement by cavity cooling
arXiv:1903.02484 · doi:10.1103/PhysRevB.101.014419
Abstract
Magnon-photon coupling has been experimentally realized inside a cavity and the emerging field known as cavity spintronics has attracted significant attention for its potential docking with quantum information science. However, one seldom knows whether this coupling implies an entanglement state among magnons and photons or not, which is crucial for its usage in quantum information. Here we study the entanglement properties among magnons and photons in an antiferromagnet-light system and find that the entanglement between magnon and photon is nearly zero while the magnon-magnon entanglement is very strong and it can be even further enhanced through the coupling with the cavity photons. The maximum enhancement occurs when the antiferromagnet reaches resonant with the light. The essential physics can be well understood within the picture of cavity induced cooling of magnon-magnon state near its joint vacuum with stronger entanglement. Our results are significant to extend the cavity spintronics to quantum manipulation and further provide an alternate to manipulate the deep strong correlations of continuous variable entanglement with a generic stable condition and easy tunability.
5 pages, 3 figures
References in corpus (19)
- Optomechanical entanglement between a movable mirror and a cavity field
- Strongly coupled magnons and cavity microwave photons
- Hybridizing ferromagnetic magnons and microwave photons in the quantum limit
- Entanglement in continuous variable systems: Recent advances and current perspectives
- Hybrid quantum systems based on magnonics
- Spin Pumping in Electrodynamically Coupled Magnon-Photon Systems
- A solid-state entangled photon pair source with high brightness and indistinguishability
- Spin pumping and spin-transfer torques in antiferromagnets
- Robust entanglement of a micromechanical resonator with output optical fields
- Quantum entanglement between two magnon modes via Kerr nonlinearity
- Entangling two magnon modes via magnetostrictive interaction
- Superfluid spin transport through antiferromagnetic insulators
- Roadmap on STIRAP applications
- All entangled states are useful for channel discrimination
- Realization of Attractive Level Crossing via a Dissipative Mode
- Antiferromagnetic magnons as highly squeezed Fock states underlying quantum correlations
- EPR paradox and quantum steering in a three-mode optomechanical system
- Atomic antiferromagnetic domain wall propagation beyond the relativistic limit
- Engineering asymmetric steady-state Einstein-Podolsky-Rosen steering in macroscopic hybrid systems
Cited by in corpus (51)
- Quantum magnonics: when magnon spintronics meets quantum information science
- Steady Bell state generation via magnon-photon coupling
- Remote generation of magnon Schrödinger cat state via magnon-photon entanglement
- Magnonic frequency comb through nonlinear magnon-skyrmion scattering
- Entangling the vibrational modes of two massive ferromagnetic spheres using cavity magnomechanics
- Remote magnon entanglement between two massive ferrimagnetic spheres via cavity optomagnonics
- Einstein-Podolsky-Rosen entanglement and asymmetric steering between distant macroscopic mechanical and magnonic systems
- Tutorial: Nonlinear magnonics
- Macroscopic entanglement of two magnon modes via quantum correlated microwave fields
- Entanglement enhancement in cavity magnomechanics by an optical parametric amplifier
- Magnon-squeezing as a niche of quantum magnonics
- Reconfigurable magnonic mode-hybridisation and spectral control in a bicomponent artificial spin ice
- Magnon-magnon entanglement and its detection in a microwave cavity
- Steady entangled-state generation via cross-Kerr effect in a ferrimagnetic crystal
- Magnon antibunching in a nanomagnet
- Entanglement enhanced and one-way steering in PT -symmetric cavity magnomechanics
- Proposal for a Bell test in cavity optomagnonics
- Magnon blockade in magnon-qubit systems
- Magnon squeezing enhanced entanglement in a cavity magnomechanical system
- Master equation approach to magnon relaxation and dephasing
- Unconventional magnon excitation by off-resonant microwaves
- Resolving nonclassical magnon composition of a magnetic ground state via a qubit
- Enhanced magnon spin current using the bosonic Klein paradox
- Pure dephasing of magnonic quantum states
- Hierarchy of magnon entanglement in antiferromagnets
- Recent progress in antiferromagnetic dynamics
- Stabilizing a single-magnon state by optimizing magnon blockade
- Quantum Sensing of Antiferromagnetic Magnon Two-Mode Squeezed Vacuum
- Universal field dependence of magnetic resonance near zero frequency
- Quantum entanglement generation on magnons assisted with microwave cavities coupled to a superconducting qubit
- Magnon and photon blockade in a hybrid antiferromagnet-cavity quantum system
- Extreme renormalisations of dimer eigenmodes by strong light-matter coupling
- Second-order correlation and squeezing of photons in cavities with ultrastrong magnon-photon interactions
- Transmon probe for quantum characteristics of magnons in antiferromagnets
- Intersublattice entanglement entropy as an extensive property in antiferromagnets
- Tunable phonon-driven magnon-magnon entanglement at room temperature
- Optomechanical cooling with simultaneous intracavity and extracavity squeezed light
- Magnonic Thermal Machines
- Diverging entanglement of critical magnons in easy-axis antiferromagnets
- Dissipative generation of significant amount of photon-phonon asymmetric steering in magnomechanical interfaces
- Entangling cavity-magnon polaritons by interacting with phonons
- Generating magnon Bell states via parity measurement
- Inductive magnon noise spectroscopy
- Hidden quantum correlations in the ground states of quasiclassical spin systems
- Electrically switchable entanglement channel in van der Waals magnets
- Role of magnon-magnon interaction in optical excitation of coherent two-magnon modes
- Dichroic cavity mode splitting and lifetimes from interactions with a ferromagnetic metal
- Cat-state-like non-Gaussian entanglement in magnon systems
- Driven-dissipative Quantum Dynamics in Cavity Magnon-Polariton System
- Squeezing and quantum control of antiferromagnetic magnon pseudospin
- Macroscopic entanglement between localized domain walls inside a cavity