Ultracold Rare-Earth Magnetic Atoms with an Electric Dipole Moment

Maxence Lepers, Hui Li, Jean-François Wyart, Goulven Quéméner, and Olivier Dulieu
Phys. Rev. Lett. 121, 063201 – Published 8 August 2018

Abstract

We propose a new method to produce an electric and magnetic dipolar gas of ultracold dysprosium atoms. The pair of nearly degenerate energy levels of opposite parity, at 17513.33cm1 with electronic angular momentum J=10, and at 17514.50cm1 with J=9, can be mixed with an external electric field, thus inducing an electric dipole moment in the laboratory frame. For field amplitudes relevant to current-day experiments, i.e., an electric field of 5kV/cm, we predict a large magnetic dipole moment up to 13 Bohr magnetons, and sizeable electric dipole moment up to 0.22 D. When a magnetic field is present, we show that the induced electric dipole moment is strongly dependent on the angle between the fields. The lifetime of the field-mixed levels is found in the millisecond range, thus allowing for suitable experimental detection and manipulation.

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  • Received 12 March 2018

DOI:https://doi.org/10.1103/PhysRevLett.121.063201

© 2018 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & Optical

Authors & Affiliations

Maxence Lepers1,2,*, Hui Li1, Jean-François Wyart1,3, Goulven Quéméner1, and Olivier Dulieu1

  • 1Laboratoire Aimé Cotton, CNRS, Université Paris-Sud, ENS Paris-Saclay, Université Paris-Saclay, 91405 Orsay, France
  • 2Laboratoire Interdisciplinaire Carnot de Bourgogne, CNRS, Université de Bourgogne Franche-Comté, 21078 Dijon, France
  • 3LERMA, Observatoire de Paris-Meudon, PSL Research University, Sorbonne Universités, UPMC Université Paris 6, CNRS UMR8112, 92195 Meudon, France

  • *maxence.lepers@u-bourgogne.fr

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Vol. 121, Iss. 6 — 10 August 2018

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