Controlling inversion and time-reversal symmetries by subcycle pulses in the one-dimensional extended Hubbard model

Owning to their high controllability, laser pulses have contributed greatly our understanding of strongly correlated electron systems. However, typical multicycle do not control the symmetry systems, which plays an important role in emergence novel quantum phases. Here, we demonstrate that subcycle whose oscillation is less than one period within a pulse envelope can inversion and time-reversal symmetries electronic states one-dimensional extended Hubbard model. Using ultrashort pulse, generate steady electric current (SEC) photoexcited state due Aharonov-Bohm flux instantaneously introduced through phase field. Consequently, broken. In contrast, broad does induce SEC but instead generates polarization, thus breaking symmetry. Both breakings be monitored by second-harmonic generation. These findings provide new methodology for designing open up field subcycle-pulse engineering.