Control of quantum mechanical tunneling
Event details
| Date | 26.06.2015 |
| Hour | 15:15 › 16:45 |
| Speaker | Prof. Frank Grossmann, Technische Universität Dresden |
| Location | |
| Category | Conferences - Seminars |
We present results on the effect of external fields as well as of a
dissipative environment on the tunneling dynamics in a bistable
double well as well as on the tunneling through a resonant tunneling
double barrier.
After reviewing briefly the coherent tunneling dynamics in
a bistable potential, the effect of coherent destruction of
tunneling by an external periodic field is highlighted [1].
Next, the influence of a single harmonic degree of freedom on the
resonant tunneling through a resonant tunneling barrier
is demonstrated [2].
Finally, some recent results on electron pumping through a resonant
tunneling barrier in the presence of a Caldeira-Leggett heat bath
are shown, that have been gained using the HEOM formalism of Tanimura
and coworkers in Wigner phase space [3].
[1] F. Grossmann, T. Dittrich, P. Jung and P. Haenggi,
Phys. Rev. Lett. 67, 516 (1991)
[2] F. Grossmann, Chem. Phys. 268, 347 (2001)
[3] A. Sakurai and Y. Tanimura, New J. Phys. 16, 015002 (2014)
dissipative environment on the tunneling dynamics in a bistable
double well as well as on the tunneling through a resonant tunneling
double barrier.
After reviewing briefly the coherent tunneling dynamics in
a bistable potential, the effect of coherent destruction of
tunneling by an external periodic field is highlighted [1].
Next, the influence of a single harmonic degree of freedom on the
resonant tunneling through a resonant tunneling barrier
is demonstrated [2].
Finally, some recent results on electron pumping through a resonant
tunneling barrier in the presence of a Caldeira-Leggett heat bath
are shown, that have been gained using the HEOM formalism of Tanimura
and coworkers in Wigner phase space [3].
[1] F. Grossmann, T. Dittrich, P. Jung and P. Haenggi,
Phys. Rev. Lett. 67, 516 (1991)
[2] F. Grossmann, Chem. Phys. 268, 347 (2001)
[3] A. Sakurai and Y. Tanimura, New J. Phys. 16, 015002 (2014)
Practical information
- Informed public
- Free
Organizer
- Prof. Jiri Vanicek
Contact
- Prof. Jiri Vanicek