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Adaptive coherent control using the von Neumann basis.

Stefan Ruetzel1, Christoph Stolzenberger, Frank Dimler

  • 1Institut für Physikalische und Theoretische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany.

Physical Chemistry Chemical Physics : PCCP
|March 18, 2011
PubMed
Summary
This summary is machine-generated.

We introduce the von Neumann representation for adaptive coherent control of femtosecond laser pulses. This method optimizes pulse shapes efficiently in simulations and experiments, simplifying structures without losing performance.

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06:42

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

Area of Science:

  • Quantum optics
  • Laser physics
  • Coherent control

Background:

  • The von Neumann representation offers a joint time-frequency description for ultrashort laser pulses.
  • Adaptive optimization is crucial for precise control of light-matter interactions.

Purpose of the Study:

  • To implement the von Neumann basis in an evolutionary algorithm for adaptive coherent control.
  • To demonstrate the efficiency and practicality of this approach for femtosecond laser pulse shaping.

Main Methods:

  • Simulations comparing the von Neumann basis with other frequency-domain parametrizations.
  • Basis-function reduction for pulse-shape simplification.
  • An optical experiment demonstrating double pulse generation with controlled time separation.

Main Results:

  • The von Neumann basis shows high efficiency in adaptive optimization compared to other methods.
  • Pulse simplification using basis reduction retains essential structures and control performance.
  • Successful experimental generation of double pulses with precise temporal separation.

Conclusions:

  • The von Neumann representation provides an effective framework for adaptive coherent control in time-frequency space.
  • This approach is particularly valuable for quantum systems requiring precise temporal and spectral control.
  • The method is experimentally validated and offers a practical tool for advanced laser pulse manipulation.