How Different Nonadiabatic Tunneling Is from the Ordinary Tunneling

Min Li, Kunlong Liu, Siqiang Luo +6 more

Shi Jian, Rui-Qiong Ma, Lin Liu

We propose a nonadiabatic tunneling technique, which is different from the stimulated Raman adiabatic passage, to improve the optical tunneling efficiency of a three-waveguide system. The theoretical calculations and results show that the tunneling efficiency can reach 100%. The exact analytic solutions to the nonadiabatic tunneling dynamics are presented. Light dynamics in the optical coupler enable a direct visualization of the population transfer of atomic system under generalized π pulses technique.

Ossama Kullie

The measurement of the tunneling time-delay is hotly debated and remains controversial. In previous works, we showed that a model that accurately describes the time-delay measured by the attoclock experiment in adiabatic and nonadiabatic field calibrations. In the present work, we show that the tunneling time reveals a universal behavior with disentangled contributions. Even more remarkable is that the barrier tunneling time-delay can be convincingly defined and determined from the difference between the time-delay of adiabatic and nonadiabatic tunnel-ionization, which also show good agreement with experimental results. Furthermore, we illustrate that in the weak measurement limit, the barrier time-delay corresponds to the Larmor-clock time and the interaction time within the barrier.

Fulvio Frisone

Ossama Kullie

The measurement of the tunneling time-delay is hotly debated and remains controversial. In previous works, we showed that a model that accurately describes the time-delay measured by the attoclock experiment in adiabatic and nonadiabatic field calibrations. In the present work, we show that the tunneling time reveals a universal behavior with disentangled contributions. Even more remarkable is that the barrier tunneling time-delay can be convincingly defined and determined from the difference between the time-delay of adiabatic and nonadiabatic tunnel-ionization, which also show good agreement with experimental results. Furthermore, we illustrate that in the weak measurement limit, the barrier time-delay corresponds to the Larmor-clock time and the interaction time within the barrier.