Figure 3From: Independent quality assessment of a commercial quantum random number generatorSimplified electrical scheme of Quantis. A, amplifier; APD, avalanche photodiode; CNT, counter; CPLD, complex programmable logic device; GEN, clock generator; INT, integrator; LED, light emitting diode; NOR, inverted OR gate; PP, post-processing algorithm; R, resistor; SSC, switching power supply; XOR, exclusive OR gateBack to article page