Extended Data Fig. 1: Spin coherence.
Population in the |\(\uparrow \rangle \) state a. as a function of the wait time twait in the detuned Ramsey experiment, and b. for the first three odd orders of the Uhrig dynamical decoupling sequence performed using the Raman beams. In the Uhrig sequence, the phase of the final pulse is chosen to maximise population at 0 wait time. As there is always a π-pulse in the centre of the wait time, any static detuning offsets are cancelled and the population in the |\(\uparrow \rangle \) state is proportional to the contrast. The coherence time is extracted from an empirical fit to an exponential function in a. and a Gaussian in b. All error bars in this figure indicate the standard error.
