Photoelectron-Ion Correlation in Photoionization of a Hydrogen Molecule and Molecule-Photon Dynamics in a Cavity

1. Front Matter

   Pages i-xii

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2. Introduction

   1. Front Matter

      Pages 1-1

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   2. General Introduction

      • Takanori Nishi

      Pages 3-18

3. Correlation Between an Ion and a Photoelectron

   1. Front Matter

      Pages 19-19

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   2. Entanglement and Coherence Created by Photoionization of \(\mathrm {H_2}\)

      • Takanori Nishi

      Pages 21-46

   3. Time Delay in the Coherent Vibrational Motion of \(\mathrm {H_2^+}\) Created by Photoionization of \(\mathrm {H_2}\)

      • Takanori Nishi

      Pages 47-61

4. Correlation Between a Molecule and Photons

   1. Front Matter

      Pages 63-63

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   2. Molecule in a Plasmonic Nanocavity

      • Takanori Nishi

      Pages 65-78

5. Back Matter

   Pages 79-95

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This book presents the latest theoretical studies giving new predictions and interpretations on the quantum correlation in molecular dynamics induced by ultrashort laser pulses. The author quantifies the amount of correlation in terms of entanglement by employing methods developed in quantum information science, in particular applied to the photoionization of a hydrogen molecule. It is also revealed that the photoelectron–ion correlation affects the vibrational dynamics of the molecular ion and induces the attosecond-level time delay in the molecular vibration. Furthermore, the book also presents how molecular vibration can couple to photons in a plasmoic nanocavity.


Physicists and chemists interested in the ultrafast molecular dynamics would be the most relevant readers. They can learn how we can employ the quantum-information-science tools to understand the correlation in the molecular dynamics and why we should consider the correlation between the photoelectron and the molecular ion to describe the ion’s dynamics. They can also learn how to treat a molecule coupled to photons in a nanocavity. All the topics are related to the state-of-the-art experiments, and so, it is important to publish these results to enhance the understanding and to induce new experiments to confirm the theory presented. 

• Attosecond science
• Quantum entanglement
• Photoionization
• Nanocavity
• Molecule in the laser field

• University of Tokyo, Tokyo, Japan

  Takanori Nishi

Takanori Nishi obtained his Ph.D. degree in 2021 from the department of chemistry at The University of Tokyo in the group of Professor Kaoru Yamanouchi. His research interest is ultrafast molecular dynamics, attosecond laser pulse, and quantum entanglement.