Optimizer and Noise Lab

module spsa_lab;
@seed(37);
param w: Angle = 1.2;
fn main() {
  let q = qreg[1];
  Ry(q[0], w);
  let cost = expect Z(q[0]);
  train {
    objective: minimize cost;
    optimizer: spsa(a = 0.2, c = 0.1);
    steps: 80;
  }
  return cost;
}