To improve an image quality in a solid-state imaging element that performs differential amplification. A reference-side amplification transistor supplies a reference current corresponding to a predetermined reference potential. A read-side amplification transistor supplies a signal current corresponding to a difference between a potential of a gate and the reference potential from a drain to a source. A pair of reset transistors initializes the potential of the gate and the reference potential. A potential control circuit controls a potential difference between the gate and the drain to a predetermined value when the potential of the gate and the reference potential are initialized.