Barren Plateau Profile

module trainability_profile;
param p0: Angle = 0.1;
param p1: Angle = 0.2;
param p2: Angle = 0.3;
param p3: Angle = 0.4;
param p4: Angle = 0.5;
param p5: Angle = 0.6;
fn main() {
  let q = qreg[4];
  Ry(q[0], p0);
  Ry(q[1], p1);
  Ry(q[2], p2);
  Ry(q[3], p3);
  CNOT(q[0], q[1]);
  CNOT(q[1], q[2]);
  CNOT(q[2], q[3]);
  Ry(q[0], p4);
  Ry(q[3], p5);
  let result = expect Z(q[0]);
  return result;
}