Table 1 Comparison of performances of single-photon sources.

MUX, multiplexed HSPS; E, single-photon enhancement factor in MUX; I, indistinguishability; CM = P1MR, predicted M-fold coincidence generation rate, assuming that M-independent sources can be prepared and synchronously operated. Note that P1 is the probability of preparing a single photon that is coupled into a single-mode fiber. For sources reported for different experimental parameters, results with conditions demonstrating the highest P1 are shown.

ReferencesType of sourceR (MHz)PHP1Eg(2)(t = 0)I
(32)SPDC~170~0.02~0.10.91
(2)SPDC~80~0.03~0.10.962(11)
(17)MUX80~0.01~0.001~4~0.50.887(38)
(15)MUX0.050.990.386(4)5.60.48(3)~0.05
(18)MUX10~0.01~0.0022~0.20.91(16)
(24)QD82~0.0010.0028(12)0.996
(25)QD800.140.0130.603(6)
(26)QD760.3370.0270.93
This work (MUX)μ = 0.180.50.980.667(24)9.7(5)0.269(7)0.92(3)
μ = 0.050.50.640.412(13)18.7(9)0.088(7)0.90(3)
μ = 0.0040.50.080.051(2)27.9(20)0.007(7)0.91(4)
Possible improvementμ = 0.150.990.7512.50.050.99