Figure 5: Direct measurements of the switch states.

(a) Experimental setup with directive antennas. (b) Raw measured scattered fields for receivers located at ±90° and for three different dimers, Dimer 1, Dimer 2, Dimer 3 (corresponding to three different associations of four spheres: the two spheres previously used plus two other spheres made of the same material and with identical diameters). (c) Raw measured fields without any dimer to indicate the level of the residual signal due to the direct radiation between the antennas. (d) Raw measured field with a dimer (d₀=1/3). Direct detection of the S and P electric field at ±90° without any (or at least very low) interaction with the incoming wave showing that the ‘on’ and ‘off’ states of the switching device can be directly measured without any reference nor processing.