Fig. 6: Analog Ramsey interferometer in QPIC.

a Sketch of a polariton circuit made of two identical hopping regions of length l separated by a free propagation region. b Sketch of the spatial dependence of the hopping parameter J(x) along the device in a. As in the case of the elementary QPIC in Fig. 3, we consider J(x) = J in the two interaction regions and zero elsewhere.