def __or__(self, qubits):
"""
Applies permutation to qubits (and synthesizes circuit).
Args:
qubits (tuple<Qureg>): Qubits to which the permutation is being
applied.
"""
try:
import revkit
except ImportError: # pragma: no cover
raise RuntimeError(
"The RevKit Python library needs to be installed and in the "
"PYTHONPATH in order to call this function")
# convert qubits to flattened list
qs = BasicGate.make_tuple_of_qureg(qubits)
qs = sum(qs, [])
# permutation must have 2*q elements, where q is the number of qubits
if 2**(len(qs)) != len(self.permutation):
raise AttributeError(
"Number of qubits does not fit to the size of the permutation")
# create reversible truth table from permutation
revkit.perm(permutation=" ".join(map(str, self.permutation)))
# create reversible circuit from reversible truth table
self.kwargs.get("synth", revkit.tbs)()
# convert reversible circuit to ProjectQ code and execute it
_exec(revkit.write_projectq(log=True)["contents"], qs)
def __or__(self, quregs):
from projectq.meta import Control
quregs = BasicGate.make_tuple_of_qureg(quregs)
if sum(len(reg) for reg in quregs) == 0:
return
eng = [q for reg in quregs for q in reg][0].engine
with Control(eng, self._controls):
self._gate | quregs
def __or__(self, qubits):
"""
Apply control function to qubits (and synthesizes circuit).
Args:
qubits (tuple<Qureg>): Qubits to which the control function is
being applied. The first `n` qubits are for
the controls, the last qubit is for the
target qubit.
"""
try:
import revkit # pylint: disable=import-outside-toplevel
except ImportError as err: # pragma: no cover
raise RuntimeError(
"The RevKit Python library needs to be installed and in the "
"PYTHONPATH in order to call this function") from err
# pylint: disable=invalid-name
# convert qubits to tuple
qs = []
for item in BasicGate.make_tuple_of_qureg(qubits):
qs += item if isinstance(item, list) else [item]
# function truth table cannot be larger than number of control qubits
# allow
if 2**(2**(len(qs) - 1)) <= self.function:
raise AttributeError(
"Function truth table exceeds number of control qubits")
# create truth table from function integer
hex_length = max(2**(len(qs) - 1) // 4, 1)
revkit.tt(table="{0:#0{1}x}".format(self.function, hex_length))
# create reversible circuit from truth table
self.kwargs.get("synth", revkit.esopbs)()
# check whether circuit has correct signature
if revkit.ps(mct=True, silent=True)['qubits'] != len(qs):
raise RuntimeError(
"Generated circuit lines does not match provided qubits")
# convert reversible circuit to ProjectQ code and execute it
_exec(revkit.to_projectq(mct=True), qs)
