Fast forward of adiabatic control of tunneling states

Katsuhiro Nakamura, Anvar Khujakulov, Sanat Avazbaev, Shumpei Masuda

Research output: Contribution to journalArticleScientificpeer-review

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By developing the preceding work on the fast forward of transient phenomena of quantum tunneling by Khujakulov and Nakamura [Phys. Rev. A 93, 022101 (2016)2469-992610.1103/PhysRevA.93.022101], we propose a scheme of the exact fast forward of adiabatic control of stationary tunneling states with use of the electromagnetic field. The idea allows the acceleration of both the amplitude and phase of wave functions throughout the fast-forward time range. The scheme realizes the fast-forward observation of the transport coefficients under the adiabatically changing barrier with the fixed energy of an incoming particle. As typical examples, we choose systems with (1) Eckart's potential with tunable asymmetry and (2) double δ-function barriers under tunable relative height. We elucidate the driving electric field to guarantee the stationary tunneling state during a rapid change of the barrier and evaluate both the electric-field-induced temporary deviation of transport coefficients from their stationary values and the modulation of the phase of complex scattering coefficients.

Original languageEnglish
Article number062108
Pages (from-to)1-12
JournalPhysical Review A
Issue number6
Publication statusPublished - 9 Jun 2017
MoE publication typeA1 Journal article-refereed

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