Skip to content.

TUD

search  |  internal  |  deutsch
Personal tools
TU Dresden » Faculty of Mechanical Science and Engineering » Institute for Materials Science » Chair of Materials Science and Nanotechnology



Thursday, 06 July 2006
(at 15:15 in room Phy 5.0.21)
Add to your Google Calendar


Molecular devices operated by shaped femtosecond laser pulses

Regina de Vivie-Riedle

Department Chemie
Ludwig-Maximilians-Universität München
   






On a microscopic scale molecules are complex quantum systems that provide a variety of properties with potential applications in the fields of data storage and information processing. Molecular vibrations are the motor in many of these processes and define the relevant time scale in the femto- to picosecond range. Efficient control of the vibrational motion can be obtained with optimally shaped femtosecond laser pulses. We apply optimal control theory to calculate the driving laser fields for a given control objective. To obtain a flexible and reliable tool which delivers robust laser fields, the control algorithms were extended to include multiple target states, laboratory constraints and the momentum of the target wave packet [1,2]. Two different applications for molecular devices will be presented. In the first example control strategies for molecular switches in donorbridge- acceptor systems driven via ultrafast reactions will be discussed [2]. The selected molecules are bistable aromatic compounds, which can be optically switched from one stable isomer to the other, allowing or preventing energy transfer. The second example is the implementation of universal quantum gates and quantum algorithms operating on molecular vibrational qubits [1,3,4].

[1] C. M. Tesch, R. de Vivie-Riedle, Phys. Rev. Lett. 89 (2002) 157901.
[2] D. Geppert, L. Seyfarth, and R. de Vivie-Riedle, App. Phys. B 79 (2004) 987-992.
[3] C. Tesch and R. de Vivie-Riedle, J. Chem. Phys. 121 (2004) 12158-12168.
[4] U. Troppmann and R. de Vivie-Riedle, J. Chem. Phys. 122 (2005) 154105.

Invited by G. Cuniberti (CMT seminar)

last modified: 2019.01.08 Di
author: webadmin

contact
Prof. Dr. Gianaurelio Cuniberti
secretariat:
Ms Sylvi Katzarow
phone: +49 (0)351 463-31420
fax: +49 (0)351 463-31422
office@nano.tu-dresden.de
postal address:
Institute for Materials Science
TU Dresden
01062 Dresden, Germany
visitors and courier address:
HAL building
TU Dresden
Hallwachsstr. 3
01069 Dresden, Germany
Max Bergmann Center
TU Dresden
Budapester Str. 27
01069 Dresden, Germany