def use_MP_Y(self, tar_bit_pos, controls, rad_angles):
"""
This is an override of a function in the parent class
EchoingSEO_reader. This is the only use_ function of this class that
doesn't simply echo its input line. This function does most of its
work inside the Multiplexor_SEO_writer.write() function that it calls.
Parameters
----------
tar_bit_pos : int
controls : Controls
rad_angles : list[float]
Returns
-------
None
"""
# the flag eval_all_vars = False so should check this
assert utg.all_floats(rad_angles)
emb, nt, nf = self.emb_for_plexor(tar_bit_pos, controls)
self.wr.emb = emb
self.wr.rad_angles = rad_angles
self.wr.num_T_trols = nt
self.wr.num_F_trols = nf
# style and num_gbits for wr are set by constructor
self.wr.write()
# revert to default embedder
self.wr.emb = CktEmbedder(self.num_qbits, self.num_qbits)
def use_ROTN(self, angle_x_rads, angle_y_rads, angle_z_rads, tar_bit_pos,
controls):
"""
Writes line in IBM qasm file corresponding to an English file line
of type: ROTN with no controls.
Parameters
----------
angle_x_rads : float
angle_y_rads : float
angle_z_rads : float
tar_bit_pos : int
controls : Controls
Returns
-------
None
"""
assert len(controls.bit_pos) == 0
rad_ang_list = [angle_x_rads, angle_y_rads, angle_z_rads]
assert utg.all_floats(rad_ang_list), \
'At present, IBM qasm does not support variable angles'
arr = OneBitGates.rot(*rad_ang_list)
line_str = Qubiter_to_IBMqasm.qasm_line_for_rot(arr, tar_bit_pos)
self.aqasm_out.write(line_str)
if self.write_qubiter_files:
self.qbtr_wr.write_controlled_one_bit_gate(tar_bit_pos, controls,
OneBitGates.rot,
rad_ang_list)
def use_ROTN(self, angle_x_rads, angle_y_rads, angle_z_rads, tar_bit_pos,
controls):
"""
Writes line in Cirq file corresponding to an English file line
of type: ROTN with no controls.
Parameters
----------
angle_x_rads : float
angle_y_rads : float
angle_z_rads : float
tar_bit_pos : int
controls : Controls
Returns
-------
None
"""
assert len(controls.bit_pos) == 0
rad_ang_list = [angle_x_rads, angle_y_rads, angle_z_rads]
assert utg.all_floats(rad_ang_list), \
"With Cirq, ROTN with any of its 3 angles variable is " +\
"not allowed. Workaround: can use 3 rotations of type " +\
"Rx, Ry or Rz with variable angles."
arr = OneBitGates.rot(*rad_ang_list)
delta, left_rads, center_rads, right_rads = \
UnitaryMat.u2_zyz_decomp(arr)
end_str = ').on(' + self.bit2str(tar_bit_pos) + '))\n'
line_str = 'ckt.append(Rz(rads=' + str(-2 * right_rads) + end_str
self.aqasm_out.write(line_str)
line_str = 'ckt.append(Ry(rads=' + str(-2 * center_rads) + end_str
self.aqasm_out.write(line_str)
line_str = 'ckt.append(Rz(rads=' + str(-2 * left_rads) + end_str
self.aqasm_out.write(line_str)
if self.write_qubiter_files:
self.qbtr_wr.write_controlled_one_bit_gate(tar_bit_pos, controls,
OneBitGates.rot_ax,
[right_rads, 3])
self.qbtr_wr.write_controlled_one_bit_gate(tar_bit_pos, controls,
OneBitGates.rot_ax,
[center_rads, 2])
self.qbtr_wr.write_controlled_one_bit_gate(tar_bit_pos, controls,
OneBitGates.rot_ax,
[left_rads, 3])