Fig. 1: Distinguishing strain- and electric-field-induced dephasing in NV ensembles.
From: Unraveling quantum dephasing of nitrogen-vacancy center ensembles in diamond
a Double quantum Ramsey sequence (upper) and strain-CPMG sequence (lower). b Dephasing rate measurements from the example sample. c Zero-field ODMR spectrum, with an inset of the enlarged hyperfine line corresponding to the \(\left|{m}_{I}=0\right\rangle\) state. The line is fitted by considering both strain distribution and microwave power broadening.
