Fig. 2

Direct averaging of the three measurement records. a Dots: rescaled average of the measurement records \(\tilde u(t)\) = \(\bar u(t){\mathrm{/}}\sqrt {\eta _{\mathrm{f}}{ {\Gamma }}_1{\mathrm{/}}2}\), \(\tilde v(t)\) = \(\bar v(t){\mathrm{/}}\sqrt {\eta _{\mathrm{f}}{ {\Gamma }}_1{\mathrm{/}}2}\) and \(\tilde w(t)\) = \(\bar w(t){\mathrm{/}}\sqrt {2\eta _{\mathrm{d}}{ {\Gamma }}_{\mathrm{d}}}\) for 1.5×10⁶ realizations of an experiment where the qubit starts in \(\left| g \right\rangle\) at time 0 and is driven so that it rotates at a Rabi frequency Ω/2π = (2 μs)⁻¹ around σ_y and endures a measurement induced dephasing rate Γ_d = (5 μs)⁻¹. Lines: calculated coordinates of the Bloch vector x(t), y(t), and z(t) from the master equation (Eq. (3) with η_i = 0). b Same figure in the Zeno regime with a drive such that Ω/2π = (16 μs)⁻¹ and Γ_d = (0.9 μs)⁻¹