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 emb_for_plexor(self, tar_bit_pos, controls):
"""
This is an internal function used inside the function use_MP_Y().
The function returns emb, nt, nf to be used as arguments of a
MultiplexorSEO_writer that will be used to expand the MP_y line
currently being considered. emb is a circuit embedder, nt is the
number of T bits and nf is the number of F bits detected in the
input argument 'controls'.
Parameters
----------
tar_bit_pos : int
target bit position of multiplexor currently being considered.
controls : Controls
controls of the MP_Y currently being considered.
Returns
-------
CktEmbedder, int, int
"""
T_bpos = []
F_bpos = []
MP_bpos = []
for bpos, kind in controls.bit_pos_to_kind.items():
# bool is subclass of int
# so isinstance(x, int) will be true if x is bool!
if isinstance(kind, bool):
if kind:
T_bpos.append(bpos)
else:
F_bpos.append(bpos)
else:
MP_bpos.append(bpos)
T_bpos.sort()
F_bpos.sort()
MP_bpos.sort()
if self.gbit_list:
g_bpos = self.gbit_list.sort()
else:
g_bpos = []
bit_map = T_bpos + F_bpos + MP_bpos + [tar_bit_pos] + g_bpos
# print("bit_map", bit_map)
assert len(bit_map) == len(set(bit_map)),\
"bits used to define multiplexor are not unique"
assert len(bit_map) <= self.num_qbits
nt = len(T_bpos)
nf = len(F_bpos)
emb = CktEmbedder(self.num_qbits, self.num_qbits, bit_map)
return emb, nt, nf
def __init__(self,
file_prefix,
num_qbits,
style,
gbit_list=None,
vars_manager=None,
**kwargs):
"""
Constructor
Parameters
----------
file_prefix : str
num_qbits : int
style : str
gbit_list : list(int)
vars_manager : PlaceholderManager
Returns
-------
"""
self.gbit_list = gbit_list
self.style = style
if gbit_list:
num_gbits = len(gbit_list)
else:
num_gbits = 0
# default embedder and rad_angles
emb = CktEmbedder(num_qbits, num_qbits)
rad_angles = None
out_file_prefix = SEO_reader.xed_file_prefix(file_prefix)
wr = MultiplexorSEO_writer(out_file_prefix,
emb,
style,
rad_angles,
num_gbits=num_gbits)
# We set the flag eval_all_vars to False but check inside use_ method
# that it has non-string arguments
vman = PlaceholderManager(eval_all_vars=False)
EchoingSEO_reader.__init__(self,
file_prefix,
num_qbits,
wr,
vars_manager=vman,
**kwargs)
self.wr.close_files()
def __init__(self, file_prefix, num_bits, c_to_tars, verbose=False):
"""
Constructor
Parameters
----------
file_prefix : str
file prefix of English file which is to be read to assemble
a list of CNots used in the file.
num_bits : int
Number of qubits used in English file with file prefix
`file_prefix`. IMP: We assume that c_to_tars refers to a chip with
num_bits too. Both the English file and the chip must have the
same number of qubits. This is no loss of generality. As long as
the English file doesn't mention qubit positions >= num_bits,
all you have to do to conform is to change the name of the
English file so that it claims to pertain to num_bits qubits.
c_to_tars : dict[int, list[int]]
a dictionary mapping j in range(num_bits) to a list, possibly
empty, of the physically allowed targets of qubit j, when j is
the control of a CNOT.
verbose : bool
Returns
-------
"""
old_cnots = ChipCouplingsFitter.get_cnots_in_file(
file_prefix, num_bits, verbose)
self.bit_map = ChipCouplingsFitter.get_bit_map_from_c_to_tars(
num_bits, old_cnots, c_to_tars, verbose)
emb = CktEmbedder(num_bits, num_bits, self.bit_map)
out_file_prefix = SEO_reader.xed_file_prefix(file_prefix)
wr = SEO_writer(out_file_prefix, emb)
EchoingSEO_reader(file_prefix, num_bits, wr)
def main():
num_qbits = 5
emb = CktEmbedder(num_qbits, num_qbits)
trols = Controls(num_qbits)
trols.bit_pos_to_kind = {3: True, 4: False}
trols.refresh_lists()
ang_rads = 30*np.pi/180
for ZL in [False, True]:
wr = SEO_writer('wr_test', emb, ZL=ZL)
wr.write_NOTA('zero bit last = ' + str(ZL))
wr.write_IF_M_beg(trols)
wr.write_IF_M_end()
wr.write_LOOP(10, 15)
wr.write_NEXT(10)
tar_bit_pos = 1
for kind in [0, 1, 2]:
wr.write_MEAS(tar_bit_pos, kind)
wr.write_PRINT('F2')
wr.write_controlled_qbit_swap(0, 2, trols)
wr.write_qbit_swap(1, 2)
gate = OneQubitGate.phase_fac
wr.write_controlled_one_qbit_gate(2, trols, gate, [ang_rads])
wr.write_global_phase_fac(30*np.pi/180)
gate = OneQubitGate.P_0_phase_fac
wr.write_controlled_one_qbit_gate(2, trols, gate, [ang_rads])
gate = OneQubitGate.P_1_phase_fac
wr.write_controlled_one_qbit_gate(2, trols, gate, [ang_rads])
gate = OneQubitGate.sigx
wr.write_controlled_one_qbit_gate(2, trols, gate)
gate = OneQubitGate.sigy
wr.write_controlled_one_qbit_gate(2, trols, gate)
gate = OneQubitGate.sigz
wr.write_controlled_one_qbit_gate(2, trols, gate)
gate = OneQubitGate.had2
wr.write_controlled_one_qbit_gate(2, trols, gate)
gate = OneQubitGate.rot_ax
wr.write_controlled_one_qbit_gate(2, trols, gate, [ang_rads, 1])
gate = OneQubitGate.rot_ax
wr.write_controlled_one_qbit_gate(2, trols, gate, [ang_rads, 2])
gate = OneQubitGate.rot_ax
wr.write_controlled_one_qbit_gate(2, trols, gate, [ang_rads, 3])
gate = OneQubitGate.rot
wr.write_controlled_one_qbit_gate(2, trols, gate,
[ang_rads/3, ang_rads*2/3, ang_rads])
gate = OneQubitGate.sigx
wr.write_one_qbit_gate(2, gate)
wr.write_cnot(2, 1)
tar_bit_pos = 0
trols1 = Controls(num_qbits)
trols1.bit_pos_to_kind = {1: 0, 2: 1, 3: True, 4: False}
trols1.refresh_lists()
wr.write_controlled_multiplexor_gate(tar_bit_pos, trols1,
[ang_rads/3, ang_rads*2/3, ang_rads, ang_rads*4/3])
trols2 = Controls(num_qbits)
trols2.bit_pos_to_kind = {1: 0, 2: 1}
trols2.refresh_lists()
wr.write_multiplexor_gate(tar_bit_pos, trols2,
[ang_rads/3, ang_rads*2/3, ang_rads, ang_rads*4/3])
wr.close_files()
def main():
num_bits_bef = 4
num_bits_aft = 5
bit_map = list(range(num_bits_bef))
emb = CktEmbedder(num_bits_bef, num_bits_aft, bit_map)
# trol_kinds in ZL convention
trol_kinds = [True, False, False]
wr = CGateSEO_writer('cgate_expansions',
emb,
do_checking=True,
verbose=False)
u2_fun_to_fun_arg_list = co.OrderedDict(
((OneBitGates.P_0_phase_fac,
[np.pi / 3]), (OneBitGates.P_1_phase_fac, [np.pi / 3]),
(OneBitGates.sigx, None), (OneBitGates.sigy,
None), (OneBitGates.sigz, None),
(OneBitGates.had2, None), (OneBitGates.rot_ax, [np.pi / 3, 2]),
(OneBitGates.rot, [np.pi / 3, np.pi / 6, np.pi / 3])))
for u2_fun, fun_arg_list in u2_fun_to_fun_arg_list.items():
wr.write_NOTA('--------new u2 gate --------------------------')
for one_line in [True, False]:
wr.one_line = one_line
if one_line:
wr.write(trol_kinds, u2_fun, fun_arg_list)
else:
for expand_1c_u2 in [False, True]:
wr.expand_1c_u2 = expand_1c_u2
wr.write_NOTA('--------expand_1c_u2=' +
str(expand_1c_u2))
print("\n", u2_fun, "one_line=", one_line, "expand=",
expand_1c_u2)
wr.write(trol_kinds, u2_fun, fun_arg_list)
wr.close_files()
# a check that an expansion multiplies to original
num_bits = 5
emb = CktEmbedder(num_bits, num_bits)
# trol_kinds in ZL convention
trol_kinds = [True, False, False, False]
file_prefix = 'cgate_expan_mat_prod'
wr = CGateSEO_writer(file_prefix, emb)
u2_fun = OneBitGates.rot_ax
rads = np.pi / 3
wr.one_line = True
wr.write_NOTA("one line=True-----------")
wr.write(trol_kinds, u2_fun, [rads, 2])
wr.write_NOTA("herm. conj, one line=False-----------")
wr.one_line = False
wr.write(trol_kinds, u2_fun, [-rads, 2])
wr.close_files()
mp = SEO_MatrixProduct(file_prefix, num_bits)
id_mat = np.diag(np.ones((1 << num_bits, )))
err = np.linalg.norm(mp.prod_arr - id_mat)
print("err=", err)