Photoinduced coherent oscillations in the one-dimensional two-orbital Hubbard model

Abstract

We study photoinduced ultrafast coherent oscillations originating from orbital degrees of freedom in the one-dimensional two-orbital Hubbard model. By solving the time-dependent Schrödinger equation for the numerically exact many-electron wave function, we obtain time-dependent optical response functions. The calculated spectra show characteristic coherent oscillations that vary with the frequency of probe light. A simple analysis for the dominant oscillating components clarifies that these photoinduced oscillations are caused by the quantum interference between photogenerated states. The oscillation attributed to the Raman-active orbital excitations (orbitons) clearly appears around the charge-transfer peak.

arXiv comment5 pages, 5 figures

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Cited by in corpus (4)

• Photo-induced spin-state change in itinerant correlated-electron system
• Transient Carrier Dynamics in a Mott Insulator with Antiferromagnetic Order
• Photoinduced Hund excitons in the breakdown of a two-orbital Mott insulator
• Nonequilibrium dynamics of multiorbital correlated electron system under time-dependent electric fields