Abstract
A Y V O 4 single crystal doped with 142 N d 3 + ions is grown using the Czochralski method. We present systematic spectroscopy measurements of the 4 I 9 / 2 → 4 F 3 / 2 transition of 142 N d 3 + ions at a temperature of 1.5 K. An absorption coefficient of 3.0 m m − 1 is obtained, along with an inhomogeneous broadening below 0.5 GHz. Under a magnetic field of 0.3 T, the optical coherence time and population lifetime are measured as 64 µs and 120 µs, respectively. The ground-state spin relaxation time approaching 11.3 s is determined by spectral hole burning. These results demonstrate the potential for broadband quantum storage using the electron spin levels of this material.
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