Ultrafast dynamics of a fermion chain in a terahertz field-driven optical cavity

Abstract

We study the effect of a terahertz field-driven single cavity mode for ultrafast control of a fermion chain with dissipation-induced nonlinearity and quadratic coupling to an infrared-active phonon mode. Without photon loss from the cavity, we uncover a first-order phase transition in the nonequilibrium steady state only for the lower phonon-polariton, accompanied by polaritons whose frequency response is asymmetric with respect to the photon frequency due to the direct laser-induced dressing effect on the photon. A weak laser field fails to induce the phase transition but renders the polaritons symmetrical. Finally, we show that sufficiently strong photon loss from the cavity eliminates the polaritons and the associated phase transition. The experimental feasibility of these phenomena is also proposed.

References in corpus (14)

• Nonlinear lattice dynamics as a basis for enhanced superconductivity in YBa2Cu3O6.5
• Cavity Quantum Materials
• Cavity-mediated thermal control of metal-to-insulator transition in 1T-TaS${}_2$
• Theory of Laser-Controlled Competing Superconducting and Charge Orders
• High quality nanocavities through multimodal confinement of hyperbolic polaritons in hexagonal boron nitride
• Quantum Floquet engineering with an exactly solvable tight-binding chain in a cavity
• Tunable cryogenic THz cavity for strong light-matter coupling in complex materials
• Spin high-harmonic generation through terahertz laser-driven phonons
• Cavity engineering of Hubbard $U$ via phonon polaritons
• Strong-coupling magnetophononics: Self-blocking, phonon-bitriplons, and spin-band engineering
• Nonequilibrium phononic first-order phase transition in a driven fermion chain
• Laser-driven first-order spin reorientation and Verwey phase transitions in the magnetite Fe${}_3$O${}_4$ beyond the range of thermodynamic equilibrium
• Laser-enhanced magnetism in SmFeO${}_3$
• Terahertz high-harmonic generation in gapped antiferromagnetic chains