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arXiv · 1503.07929

Ultralong-Range Rydberg Molecules in a Divalent-Atomic System

B. J. DeSalvo·J. A. Aman·F. B. Dunning·T. C. Killian·H. R. Sadeghpour·S. Yoshida·J. Burgdörfer
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Abstract

We report the creation of ultralong-range Sr$_2$ molecules comprising one ground-state $5s^2$ $^1S_0$ atom and one atom in a $5sns$ $^3S_1$ Rydberg state for $n$ ranging from 29 to 36. Molecules are created in a trapped ultracold atomic gas using two-photon excitation near resonant with the $5s5p$ $^3P_1$ intermediate state, and their formation is detected through ground-state atom loss from the trap. The observed molecular binding energies are fit with the aid of first-order perturbation theory that utilizes a Fermi pseudopotential with effective $s$-wave and $p$-wave scattering lengths to describe the interaction between an excited Rydberg electron and a ground-state Sr atom.

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B. J. DeSalvo, J. A. Aman, F. B. Dunning, T. C. Killian, H. R. Sadeghpour, S. Yoshida, J. Burgdörfer. 2015-03-26. Ultralong-Range Rydberg Molecules in a Divalent-Atomic System. https://doi.org/10.1103/physreva.92.031403

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