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Strong field quantum path control using attosecond pulse trains.

Kenneth J Schafer1, Mette B Gaarde, Arne Heinrich

  • 1Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803-4001, USA.

Physical Review Letters
|February 3, 2004
PubMed
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Attosecond pulse trains control strong field processes by selecting single quantum paths. This technique enables precise manipulation of high-order harmonics and defines a high-resolution attosecond clock.

Area of Science:

  • Quantum optics
  • Strong field physics
  • Attosecond science

Background:

  • Strong field processes often involve multiple interfering quantum pathways.
  • Controlling these pathways is crucial for understanding and manipulating quantum phenomena.

Purpose of the Study:

  • To demonstrate the application of attosecond pulse trains in controlling strong field processes.
  • To show how attosecond pulse trains can select individual quantum paths.
  • To explore the use of this selection for creating an attosecond clock.

Main Methods:

  • Utilizing attosecond pulse trains in combination with intense infrared laser fields.
  • Performing calculations to manipulate time-frequency properties of high-order harmonics.
  • Analyzing quantum path contributions at the single-atom level.

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Main Results:

  • Attosecond pulse trains can microscopically select single quantum path contributions.
  • Demonstrated manipulation of high-order harmonic generation at the single-atom level.
  • Established quantum path selection as a method for defining an attosecond clock.

Conclusions:

  • Attosecond pulse trains offer a natural and effective method for controlling strong field processes.
  • Precise quantum path selection is achievable, leading to new metrology applications.
  • This work paves the way for high-resolution attosecond timing.