摘要
With the development of attosecond science, tunneling time can now be measured experimentally with the attoclock technique. However, there are many different theoretical definitions of tunneling time and no consensus has been achieved.Here, we bridge the relationship between different definitions of tunneling time based on a quantum travel time in onedimensional rectangular barrier tunneling problem. We find that the real quantum travel time t_(Re) is equal to the Bohmian time t_(Bohmian), which is related to the resonance lifetime of a bound state. The total quantum travel time τt can perfectly retrieve the transversal time t_x and the Büttiker–Landauer time τ_(BL) in two opposite limits, regardless of the particle energy.
With the development of attosecond science, tunneling time can now be measured experimentally with the attoclock technique. However, there are many different theoretical definitions of tunneling time and no consensus has been achieved.Here, we bridge the relationship between different definitions of tunneling time based on a quantum travel time in onedimensional rectangular barrier tunneling problem. We find that the real quantum travel time t_(Re) is equal to the Bohmian time t_(Bohmian), which is related to the resonance lifetime of a bound state. The total quantum travel time τt can perfectly retrieve the transversal time t_x and the Büttiker–Landauer time τ_(BL) in two opposite limits, regardless of the particle energy.
作者
Zheng Shu
Xiaolei Hao
Weidong Li
Jing Chen
舒正;郝小雷;李卫东;陈京(Institute of Applied Physics and Computational Mathematics;Institute of Theoretical Physics and Department of Physics, State Key Laboratory of Quantum Optics and Quantum Optics Devices,Collaborative Innovation Center of Extreme Optics, Shanxi University;High Energy Density Physics Simulation (HEDPS), Center for Applied Physics and Technology, Peking University;Center for Advanced Material Diagnostic Technology, Shenzhen Technology University)
基金
Project supported by the National Key Research and Development Program of China(Grant No.2016YFA0401100)
the National Natural Science Foundation of China(Grant Nos.11425414,11504215,and 11874246)
