Journal article
Discovery of iron group impurity ion spin states in single crystal Y2SiO5 with strong coupling to whispering gallery photons
M Goryachev, WG Farr, ND Carmo Carvalho, DL Creedon, JM Le Floch, S Probst, P Bushev, ME Tobar
Applied Physics Letters | AMER INST PHYSICS | Published : 2015
DOI: 10.1063/1.4922376
Abstract
Interaction of Whispering Gallery Modes (WGMs) with dilute spin ensembles in solids is an interesting paradigm of Hybrid Quantum Systems potentially beneficial for Quantum Signal Processing applications. Unexpected ion transitions are measured in single crystal Y2SiO5 using WGM spectroscopy with large Zero Field Splittings at 14.7GHz, 18.4GHz, and 25.4GHz, which also feature considerable anisotropy of the g-tensors as well as two inequivalent lattice sites, indicating spins from Iron Group Ion (IGI) impurities. The comparison of undoped and Rare-Earth doped crystals reveal that the IGIs are introduced during co-doping of Eu3+ or Er3+ with concentration at much lower levels of order 100ppb. T..
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Awarded by Australian Research Council
Funding Acknowledgements
We thank L. Alegria and Z. Cole (Scientific Materials Corp.) for the valuable discussions concerning of spin impurity doping of YSO crystals. This work was supported by Australian Research Council Grant CE110001013, a UWA Research Collaboration Award, and by BMBF Project QUIMP 01BQ1060.