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Control of Ion-Photoelectron Entanglement and Coherence Via Rabi Oscillations.

Kenichi L Ishikawa1,2,3,4, Kevin C Prince5, Kiyoshi Ueda6

  • 1Department of Nuclear Engineering and Management, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.

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This study explores photoionization using two extreme-ultraviolet pulses, demonstrating how Rabi coupling creates coherence between photoelectron wave packets from different atomic subshells.

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Area of Science:

  • Atomic Physics
  • Quantum Optics
  • Photoionization Dynamics

Background:

  • Photoionization typically results in incoherent photoelectron wave packets.
  • Controlling photoionization dynamics is crucial for advanced spectroscopy and quantum control.

Purpose of the Study:

  • To theoretically investigate photoionization using a pair of coherent extreme-ultraviolet pulses.
  • To demonstrate the creation of coherence between photoelectron wave packets from different subshells via Rabi coupling.

Main Methods:

  • Theoretical investigation using an essential-states approach.
  • Derivation of analytical expressions for photoionization dynamics.
  • Analysis of parameters influencing Rabi coupling.

Main Results:

  • Coherent coupling of two photoelectron wave packets is achieved.
  • Rabi coupling is shown to induce coherence between initially incoherent wave packets.
  • The influence of pulse parameters (phase, width, delay, coupling strength) on coherence is analyzed.

Conclusions:

  • Rabi coupling provides a mechanism to control and create coherence in photoionization.
  • The findings are applicable to various quantum systems exhibiting multi-shell photoionization.
  • This work advances the understanding of light-matter interactions in strong fields.