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The attoclock measurements of the tunneling time have attracted a very considerable attention [1]. These measurements and further experiments [2] could be interpreted in terms of a finite tunneling time whereas the theory [3,4] firmly pointed to instantaneous tunneling. In the latest development, the attoclock offset angle was wholly attributed to the Coulomb field effect [5] and the hydrogen atom measurement returned the upper bounds on the tunneling time not exceeding 2 atto-seconds [6]. My presentation will highlight these and other recent developments. In particular, the new set of attoclock experiments and calculations on the molecular hydrogen will be presented and discussed.
报告人成果：
[1] P. Eckle et al, Nat. Phys. 4, 565 (2008) and Science 322(5907), 1525 (2008).
[2] N. Camus et al, Phys. Rev. Lett. 119, 023201 (2017).
[3] L. Torlina et al, Nat. Phys. 11, 503 (2015).
[4] H. Ni et al, Phys. Rev. Lett. 117, 023002 (2016).
[5] A. W. Bray et al, Phys. Rev. Lett. 121, 123201 (2018).
[6] U. S. Sainadh Nature (2019) doi.org/10.1038/s41586-019-1028-3.
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