University of Connecticut

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Atomic, Molecular, and Optical Physics Seminar

Monday, September 17, 2018
4:00pm – 5:00pm

Storrs Campus
Physics Building, P121

Dr. Shimshon Kallush, Physics and Optical Engineering Department, ORT Braude College, Karmiel, and The Fritz Haber Center for Molecular Dynamics, The Hebrew University, Jerusalem, Israel

Molecular alignment in hot and cold regimes, and its relationship to quantum coherence

The phenomena of field-free instantaneous quantum revivals of molecular alignment and orientation driven by optical and/or terahertz fields will be introduced. A brief survey over a few applications of the phenomena will be presented within this context:

1. Ultracold photoassociation will be shown to intrinsically contain molecular alignment. Its characteristics and the feasibility to detect directional preferences for the photoassociated species will be discussed.

2. Rotational echoes of alignment under multiple pulses will be shown to lead to unique spatial-temporal structures of the refractive index. Several applications of this feature will be suggested.

3. The quantum picture of alignment raises questions that relate to the ability to embed quantum coherences into thermal quantum systems. The problem of quantification of coherences is defined and some results that predict the ability to induce field-driven coherences will be presented


Prof. P. Gould

Physics Department (primary)

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