Extended Data Fig. 2: Displacements for projection to logical states (extended figure 2).
From: Error correction of a logical grid state qubit by dissipative pumping
Illustration of displacements in phase space during logical state initialization into an eigenstate of a) XL, b) YL or c) ZL. Starting at the origin, we apply a global displacement (green arrows) followed by a measurement of the logical state (thick orange arrows, short bias displacements for finite measurements are not shown) and an appropriate feedback (blue arrows). The wave packet is split, following different feedback paths depending on whether it is a + eigenstate (red arrows) or − eigenstate (blue arrows) of the logical operator. We can initialize into either + or – eigenstates by tuning the feedback direction as shown by the solid or dashed arrows respectively.
