The 2,431st Meeting of the Society

December 18, 2020 at 8:00 PM

Zoom Webinar

Quantum Chemistry at Ultracold Temperatures

Building Single Molecules Atom by Atom

Kang-Kuen Ni

Morris Kahn Associate Professor of Chemistry & Chemical Biology, and Physics
Harvard University

About the Lecture

Advances in quantum manipulation of molecules bring unique opportunities, including the use of molecules to search for new physics, harnessing molecular resources for quantum engineering, and exploring chemical reactions in the ultra-low temperature regime.

This talk will focus on work developing techniques to build single ultracold molecules in optical tweezers as a versatile platform for quantum simulation and quantum computation. Starting with the first proof-of-principle demonstration of building a sodium-cesium molecule from two atoms, the lecture will progress towards full internal and external quantum state control of a single rovibrational ground-state molecule. The lecture will explain the challenges that have been encountered and how they have been overcome, and it will discuss how these single molecule implementations will be valuable resources for quantum entanglement applications due to their rich internal degrees of freedom and strong dipolar interactions.

Suggested Readings for the Lecture:
1. L. R. Liu, J. D. Hood, Y. Yu, J. T. Zhang, N. R. Hutzler, T. Rosenband, K.-K. Ni
Building one molecule from a reservoir of two atoms
Science 360, 900 (2018)

2. D. Barredo, S. de Leseleuc, V. Lienhard, T. Lahaye, and A. Browaeys
Science 354, 1021 (2016).

3. M. Endres, H. Bernien, A. Keesling, H. Levine, E. R. Anschuetz, A. Krajenbrink, C. Senko, V. Vuletic, M. Greiner, and M. D. Lukin
Science 354, 1024 (2016).

About the Speaker

Kang-Kuen Ni is the Morris Kahn Associate Professor of Chemistry and Chemical Biology and of Physics at Harvard University. Her group pursues innovative approaches to using lasers and magnetic fields to bring molecules to a stand still. In particular, they create and gain quantum control of molecules for the study of chemical reactions, quantum information processing, and quantum many-body physics.

Kang-Kuen earned her PhD at the University of Colorado, Boulder.