Magnetoassociation of a Feshbach molecule and spin-orbit interaction between the ground and electronically excited states

Magnetoassociation of a Feshbach molecule and spin-orbit interaction between the ground and... By preparing a cold-atom ensemble of mixtures of the ground S01 and metastable P23 states of ytterbium atoms Yb171, we successfully associate a Feshbach molecule Yb2171 with one Yb171 atom in its electronically excited state and another one in the ground state, by sweeping a magnetic field across a Feshbach resonance. The atom-molecule conversion efficiency reaches about 50%, confirmed by a separate image of atoms and molecules with a Stern-Gerlach effect and an atom loss measurement. In addition, we successfully implement a spin-orbit coupling with a one-photon process between the P23 (pseudo-spin-up) and ground S01 (pseudo-spin-down) states of a Yb atom. As a benchmark, we observe a spin-momentum locking behavior at a large Rabi frequency. The achieved successful production of Feshbach molecules, along with the implementation of spin-orbital coupling between the S01 and P23 states, provides an important step towards the study of a topological superfluid. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review A American Physical Society (APS)

Magnetoassociation of a Feshbach molecule and spin-orbit interaction between the ground and electronically excited states

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Magnetoassociation of a Feshbach molecule and spin-orbit interaction between the ground and electronically excited states

Abstract

By preparing a cold-atom ensemble of mixtures of the ground S01 and metastable P23 states of ytterbium atoms Yb171, we successfully associate a Feshbach molecule Yb2171 with one Yb171 atom in its electronically excited state and another one in the ground state, by sweeping a magnetic field across a Feshbach resonance. The atom-molecule conversion efficiency reaches about 50%, confirmed by a separate image of atoms and molecules with a Stern-Gerlach effect and an atom loss measurement. In addition, we successfully implement a spin-orbit coupling with a one-photon process between the P23 (pseudo-spin-up) and ground S01 (pseudo-spin-down) states of a Yb atom. As a benchmark, we observe a spin-momentum locking behavior at a large Rabi frequency. The achieved successful production of Feshbach molecules, along with the implementation of spin-orbital coupling between the S01 and P23 states, provides an important step towards the study of a topological superfluid.
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Publisher
The American Physical Society
Copyright
Copyright © ©2017 American Physical Society
ISSN
1050-2947
eISSN
1094-1622
D.O.I.
10.1103/PhysRevA.96.023602
Publisher site
See Article on Publisher Site

Abstract

By preparing a cold-atom ensemble of mixtures of the ground S01 and metastable P23 states of ytterbium atoms Yb171, we successfully associate a Feshbach molecule Yb2171 with one Yb171 atom in its electronically excited state and another one in the ground state, by sweeping a magnetic field across a Feshbach resonance. The atom-molecule conversion efficiency reaches about 50%, confirmed by a separate image of atoms and molecules with a Stern-Gerlach effect and an atom loss measurement. In addition, we successfully implement a spin-orbit coupling with a one-photon process between the P23 (pseudo-spin-up) and ground S01 (pseudo-spin-down) states of a Yb atom. As a benchmark, we observe a spin-momentum locking behavior at a large Rabi frequency. The achieved successful production of Feshbach molecules, along with the implementation of spin-orbital coupling between the S01 and P23 states, provides an important step towards the study of a topological superfluid.

Journal

Physical Review AAmerican Physical Society (APS)

Published: Aug 1, 2017

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