Fig. 3: Photonic addition, multiplication and MAC operations using continuous-time data representation with 50 multiplexed RFs.
From: Higher-dimensional processing using a photonic tensor core with continuous-time data
All the input numbers x are randomly generated from [0, 1] ⊆ R with a 0.01 resolution. a, Y junction loaded with PCM memories on each arm for the verification of operations. b,c, Comparison of normalized measured and expected time-domain addition output (b) and frequency-domain output (c). d, Quasi-analogue PCM weight setting using optical pump pulses with varying widths. e, Accuracy of 1,500 multiplication results from 300 random multiplicands and 5 multipliers. The inset shows the normalized error distribution. s.d., standard deviation. f, Accuracy of 1,500 MAC results using 300 pairs of random numbers and 5 pairs of weights. The inset shows the normalized error distribution.
