Coherence times of Ce${}^{3+}$ spin states in CaWO${}_4$ crystal

Abstract

We study the coherence times and perform manipulations on the lowest-energy states of trivalent cerium ion in calcium tungstate crystal. We find the phase memory time reaching 14.2 $\mu$s and the time of coherent manipulations reaching 0.3 $\mu$s in the low-temperature limit, the latter can potentially be elongated by using the rotation angle and off-resonance error correction schemes.

9 pages, 5 figures