#
# Copyright © 2022-2023 University of Strasbourg. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
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import mimiqcircuits as mc
import mimiqcircuits.lazy as lz
[docs]
class PolynomialOracle(mc.Gate):
"""
Polynomial Oracle.
Args:
a (Num): Coefficient a in the polynomial.
b (Num): Coefficient b in the polynomial.
c (Num): Coefficient c in the polynomial.
d (Num): Coefficient d in the polynomial.
Raises:
ValueError: If the input parameters do not satisfy the required conditions.
Returns:
PolynomialOracle: The Polynomial Oracle.
Examples:
>>> from mimiqcircuits import *
>>> c = Circuit()
>>> c.push(PolynomialOracle(5,5,1, 2, 3, 4), 1, 2, 3, 4, 5, 6, 7, 8, 9, 10)
11-qubit circuit with 1 instructions:
└── PolynomialOracle(1, 2, 3, 4) @ q[1,2,3,4,5], q[6,7,8,9,10]
<BLANKLINE>
"""
_name = "PolynomialOracle"
_num_qregs = 2
_num_qubits = None
def __init__(self, nx, ny, a, b, c, d):
if not all(isinstance(x, int) for x in [a, b, c, d]):
raise ValueError("Coefficients a, b, c, d must be integers.")
super().__init__()
self._num_qubits = nx + ny
self._qregsizes = [nx, ny]
self._params = [nx, ny, a, b, c, d]
self.a = a
self.b = b
self.c = c
self.d = d
def __new__(cls, *args):
if len(args) == 4:
return lz.LazyExpr(PolynomialOracle, lz.LazyArg(), lz.LazyArg(), *args)
elif len(args) == 6:
return object.__new__(cls)
else:
raise ValueError("Invalid number of arguments.")
[docs]
def inverse(self):
return self
def _matrix(self):
raise NotImplementedError(
"Matrix representation for PolynomialOracle is not implemented.")
def _decompose(self, circ, qubits, bits):
return circ.push(self, *qubits)
def __str__(self):
return f'PolynomialOracle{self.a, self.b, self.c, self.d}'
__all__ = ['PolynomialOracle']
