Measurement of the thulium ion spin Hamiltonian in an yttrium gallium garnet host crystal

Journal article (2021)

Authors

J.H. Davidson QID/Tittel Lab - QuTech Advanced Research Centre , Kavli institute of nanoscience Delft, QuTech Advanced Research Centre
Philip J.T. Woodburn Montana State University - Bozeman
Aaron D. Marsh Montana State University - Bozeman
Kyle J. Olson Montana State University - Bozeman
Adam Olivera Montana State University - Bozeman
A. Das Kavli institute of nanoscience Delft, QID/Tittel Lab - QuTech Advanced Research Centre , QuTech Advanced Research Centre
M. Falamarzi Askarani Kavli institute of nanoscience Delft, QuTech Advanced Research Centre, QID/Tittel Lab - QuTech Advanced Research Centre
W. Tittel Schaffhausen Institute of Technology–SIT, Geneva, Kavli institute of nanoscience Delft, Quantum Communications Lab - EEMCS , Université de Genève, QID/Tittel Lab - QuTech Advanced Research Centre
Rufus L. Cone Montana State University - Bozeman
Charles W. Thiel Montana State University - Bozeman
Affiliation
QuTech Advanced Research Centre
Copyright: © 2021 J.H. Davidson, Philip J.T. Woodburn, Aaron D. Marsh, Kyle J. Olson, Adam Olivera, A. Das, M. Falamarzi Askarani, W. Tittel, Rufus L. Cone, Charles W. Thiel
DOI: https://doi.org/10.1103/PhysRevB.104.134103
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Published Date

2021

Language

English

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Affiliation

QuTech Advanced Research Centre

Abstract

We characterize the magnetic properties for thulium ion energy levels in the (Tm:YGG) lattice with the goal to improve decoherence and reduce linewidth broadening caused by local host spins and crystal imperfections. More precisely, we measure hyperfine tensors for the lowest level of and excited states using a combination of spectral hole burning, absorption spectroscopy, and optically detected nuclear magnetic resonance. By rotating the sample through a series of angles with an applied external magnetic field, we measure and analyze the orientation dependence of the ion's spin Hamiltonian. Using this spin Hamiltonian, we propose a set of orientations to improve material properties that are important for light-matter interaction and quantum information applications. Our results yield several important external field directions: some to extend optical coherence times, another to improve spin inhomogeneous broadening, and yet another that maximizes mixing of the spin states for specific sets of ions, which allows improving optical pumping and creation of lambda systems in this material.