TY - JOUR
T1 - Hyperfine interactions and coherent spin dynamics of isotopically purified 167Er3+ in polycrystalline Y2O3
AU - Rajh, Tijana
AU - Sun, Lei
AU - Gupta, Shobhit
AU - Yang, Jun
AU - Zhang, Haitao
AU - Zhong, Tian
N1 - Publisher Copyright:
© 2022 The Author(s). Published by IOP Publishing Ltd.
PY - 2022/12/1
Y1 - 2022/12/1
N2 - 167Er3+ doped solids are a promising platform for quantum technology due to erbium’s telecom C-band optical transition and its long hyperfine coherence times. We experimentally study the spin Hamiltonian and dynamics of 167Er3+ spins in Y2O3 using electron paramagnetic resonance (EPR) spectroscopy. The anisotropic electron Zeeman, hyperfine and nuclear quadrupole matrices are fitted using data obtained by X-band (9.5 GHz) EPR spectroscopy. We perform pulsed EPR spectroscopy to measure spin relaxation time T 1 and coherence time T 2 for the 3 principal axes of an anisotropic g tensor. Long electronic spin coherence time up to 24.4 μs is measured for lowest g transition at 4 K, exceeding previously reported values at much lower temperatures. Measurements of decoherence mechanism indicates T 2 limited by spectral diffusion and instantaneous diffusion. Long spin coherence times, along with a strong anisotropic hyperfine interaction makes 167Er3+:Y2O3 a rich system and an excellent candidate for spin-based quantum technologies.
AB - 167Er3+ doped solids are a promising platform for quantum technology due to erbium’s telecom C-band optical transition and its long hyperfine coherence times. We experimentally study the spin Hamiltonian and dynamics of 167Er3+ spins in Y2O3 using electron paramagnetic resonance (EPR) spectroscopy. The anisotropic electron Zeeman, hyperfine and nuclear quadrupole matrices are fitted using data obtained by X-band (9.5 GHz) EPR spectroscopy. We perform pulsed EPR spectroscopy to measure spin relaxation time T 1 and coherence time T 2 for the 3 principal axes of an anisotropic g tensor. Long electronic spin coherence time up to 24.4 μs is measured for lowest g transition at 4 K, exceeding previously reported values at much lower temperatures. Measurements of decoherence mechanism indicates T 2 limited by spectral diffusion and instantaneous diffusion. Long spin coherence times, along with a strong anisotropic hyperfine interaction makes 167Er3+:Y2O3 a rich system and an excellent candidate for spin-based quantum technologies.
KW - electron spin resonance
KW - hyperfine interactions
KW - rare-earth ion
UR - http://www.scopus.com/inward/record.url?scp=85152801860&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85152801860&partnerID=8YFLogxK
U2 - 10.1088/2633-4356/ac9e86
DO - 10.1088/2633-4356/ac9e86
M3 - Article
AN - SCOPUS:85152801860
SN - 2633-4356
VL - 2
JO - Materials for Quantum Technology
JF - Materials for Quantum Technology
IS - 4
M1 - 045002
ER -