Direct observation of entangled electronic-nuclear wave packets

Author:

Moğol Gönenç1,Kaufman Brian1ORCID,Weinacht Thomas1,Cheng Chuan2ORCID,Ben-Itzhak Itzik3ORCID

Affiliation:

1. Department of Physics and Astronomy, Stony Brook University, Stony Brook New York 11794-3800, USA

2. Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA and Department of Physics and Astronomy, Stony Brook University, Stony Brook New York 11794-3800, USA

3. James R. Mcdonald Laboratory, Kansas State University, Manhattan Kansas 66506-2604, USA

Abstract

We present momentum resolved covariance measurements of entangled electronic-nuclear wave packets created and probed with octave spanning phaselocked ultrafast pulses. We launch vibrational wave packets on multiple electronic states via multiphoton absorption, and probe these wave packets via strong field double ionization using a second phaselocked pulse. Momentum resolved covariance mapping of the fragment ions highlights the nuclear motion, while measurements of the yield as a function of the relative phase between pump and probe pulses highlight the electronic coherence. The combined measurements allow us to directly visualize the entanglement between the electronic and nuclear degrees of freedom and follow the evolution of the complete wavefunction. Published by the American Physical Society 2024

Funder

National Science Foundation

Chemical Sciences, Geosciences, and Biosciences Division

Basic Energy Sciences

Office of Science

U.S. Department of Energy

Publisher

American Physical Society (APS)

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