Controlling the magnetic state of the proximate quantum spin liquid $\alpha$-RuCl${}_3$ with an optical cavity

Abstract

Harnessing the enhanced light-matter coupling and quantum vacuum fluctuations resulting from mode volume compression in optical cavities is a promising route towards functionalizing quantum materials and realizing exotic states of matter. Here, we extend cavity quantum electrodynamical materials engineering to correlated magnetic systems, by demonstrating that a Fabry-Pérot cavity can be used to control the magnetic state of the proximate quantum spin liquid $\alpha$-RuCl${}_3$. Depending on specific cavity properties such as the mode frequency, photon occupation, and strength of the light-matter coupling, any of the magnetic phases supported by the extended Kitaev model can be stabilized. In particular, in the THz regime, we show that the cavity vacuum fluctuations alone are sufficient to bring $\alpha$-RuCl${}_3$ from a zigzag antiferromagnetic to a ferromagnetic state. By external pumping of the cavity in the few photon limit, it is further possible to push the system into the antiferromagnetic Kitaev quantum spin liquid state.

12 pages, 4 figures

References in corpus (22)

• Mott Insulators in the Strong Spin-Orbit Coupling Limit: From Heisenberg to a Quantum Compass and Kitaev Models
• Moiré heterostructures as a condensed matter quantum simulator
• Nonthermal pathways to ultrafast control in quantum materials
• QuSpin: a Python Package for Dynamics and Exact Diagonalisation of Quantum Many Body Systems part I: spin chains
• Kitaev magnetism in honeycomb RuCl3 with intermediate spin-orbit coupling
• Cavity Quantum Materials
• Strongly-Correlated Electron-Photon Systems
• Hidden symmetries of the extended Kitaev-Heisenberg model: Implications for honeycomb lattice iridates A2IrO3
• Twist engineering of the two-dimensional magnetism in double bilayer chromium triiodide homostructures
• Cavity-mediated thermal control of metal-to-insulator transition in 1T-TaS${}_2$
• Giant modulation of optical nonlinearity by Floquet engineering
• The Ferroelectric Photo-Groundstate of SrTiO${}_3$: Cavity Materials Engineering
• A perspective on ab initio modeling of polaritonic chemistry: The role of non-equilibrium effects and quantum collectivity
• Spin-correlated exciton-polaritons in a van der Waals magnet
• Cavity-Enhanced Linear Dichroism in a van der Waals Antiferromagnet
• Self-consistent DFT+U method for real-space time-dependent density functional theory calculations
• Cavity magnon-polaritons in cuprate parent compounds
• Effective theory of lattice electrons strongly coupled to quantum electromagnetic fields
• Phonoritons in a monolayer hBN optical cavity
• Light-Induced Control of Magnetic Phases in Kitaev Quantum Magnets
• Effective single mode methodology for strongly coupled multimode molecular-plasmon nanosystems
• Cavity-renormalized quantum criticality in a honeycomb bilayer antiferromagnet

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