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Quantum tunneling time is a highly debated topic – we explain why
This is the latest update on the electron tunneling time measured with the attoclock technique. After a detailed check on all the approximations, we can confirm that the He attoclock measurement is in agreement with finite tunneling time models. However non-adiabatic effects change the effective barrier width and some open issues remain with regards to the exact tunneling starting time.
by Benjamin Willenberg