I’m building an experimental setup for widefield nanodiamond quantum sensing, which will provide a new approach to explore live cells. (In Progressing…)

Dynamical classification of topological quantum phases by quench dynamics provides a novel and efficient scheme in characterizing topological invariants in equilibrium. Different from usual sudden quench, we study the non-adiabatic dynamical classification scheme by a generic non-adiabatic protocol of slowly quenching the system Hamiltonian, which is realized by introducing a Coulomb-like Landau Zener problem. the new scheme can provides a more efficient dynamical characterization approach for ultracold-atom experiments.

Taking the 3D strong topological insulator Bi_{2}Se_{3} as an example, I learn the whole process from VASP (based on DFT) to constructing Wannier function, and finally using WannierTools to study topological properties, e.g., energy spectrum or spin texture of the surface states. computational results are consistent with experiments by ARPES.

Marcella published a “quantum-mechanical" treatment of the single-slit interference experiment by assuming wave function is a plateau within a slit. we point out that he made a mistake (infinitely large energy). by correcting wave function with the ground state of the infinitely deep well, we get a new results which are in qualitatively agreement with the real experiment of material particles C_{60} .

We numerically simulate the Stimulated Raman Scattering growing process under Flatten Maxwellian distribution and Double Maxwellian distribution by Vlasov program. In the linear phase, We found a linear increasing law between the average reflect radio and the temperature of hot electrons, furthermore, for which we provide an explanation with the Landau damping.