Figure 4
(a) Coincidence counting of D 1, D 3(D 2, D 4) and D 1, D 4 (D 2, D 3) with respect to phase modulation(β 1–β 2). (b) Coincidence counting of D 1 and D 3 with respect to modulation of Polarizer1 (θ 1). (c) Coincidence counting of D 1 and D 3 with respect to modulation of Polarizer2 (θ 2).
