Ultrafast laser induces macroscopic symmetry-breaking of diamond color centers
Published in Physics
This study not only achieves a cross-scale, full-cycle simulation spanning from the localized excitation of NV centers and molecular-like local vibrations to phonon diffusion under the condensed matter physics paradigm—vividly revealing the novel physical regime of “local-to-extended” dynamics in quantum defect systems—but also breaks through the bottlenecks of conventional computational methods. It successfully tackles the challenge of performing efficient and stable simulations of large-scale, non-collinear magnetic systems over hundred-femtosecond timescales while incorporating strong spin-orbit coupling. This work thus provides a fresh theoretical perspective and a new computational paradigm for understanding ultrafast non-equilibrium processes in solid-state quantum defects.
I am currently working on the development of time-dependent density functional methods and applying these methods to simulate ultrafast phenomena, including photo-induced phase transition, ultrafast spin dynamics, and excited-state electron-phonon coupling.
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