Table 1 Comparison of different on-chip ONNs

Ref. ⁴²

15

1

N.A.

144.2 pJ/OP

Coherent

Positive

Ref. ⁶

6

3

410 ps

9 pJ/OP

Coherent

Complex

Ref. ⁵

30

3

570 ps

14 pJ/OP

Coherent

Positive

This work

64

4

4.1 ns^a

121.7 pJ/OP^a

Partially coherent

Real