WeightedSumOperator¶

class WeightedSumOperator(num_state_qubits, weights, i_state=None, i_sum=None)[source]¶

Adds q^T * w to separate register for non-negative integer weights w.

Computes the weighted sum controlled by state qubits

Parameters

num_state_qubits (int) – number of state qubits
weights (Union(list, numpy.ndarray)) – weights per state qubits
i_state (Optional(Union(list, numpy.ndarray))) – indices of state qubits, set to range(num_state_qubits) if None
i_sum (Optional(int)) – indices of target qubits (that represent the resulting sum), set to range(num_state_qubits, num_state_qubits + req_num_sum_qubits) if None

Raises

Attributes

`WeightedSumOperator.num_carry_qubits`	returns num carry qubits
`WeightedSumOperator.num_state_qubits`	returns num state qubits
`WeightedSumOperator.num_sum_qubits`	returns num sum qubits
`WeightedSumOperator.num_target_qubits`	Returns the number of target qubits
`WeightedSumOperator.weights`	returns weights

Methods

`WeightedSumOperator.build`(qc, q[, …])	Adds corresponding sub-circuit to given circuit
`WeightedSumOperator.build_controlled`(qc, q, …)	Adds corresponding controlled sub-circuit to given circuit
`WeightedSumOperator.build_controlled_inverse`(qc, …)	Adds controlled inverse of corresponding sub-circuit to given circuit
`WeightedSumOperator.build_controlled_inverse_power`(qc, …)	Adds controlled, inverse, power of corresponding circuit.
`WeightedSumOperator.build_controlled_power`(qc, …)	Adds controlled power of corresponding circuit.
`WeightedSumOperator.build_inverse`(qc, q[, …])	Adds inverse of corresponding sub-circuit to given circuit
`WeightedSumOperator.build_inverse_power`(qc, …)	Adds inverse power of corresponding circuit.
`WeightedSumOperator.build_power`(qc, q, power)	Adds power of corresponding circuit.
`WeightedSumOperator.get_num_qubits`()	returns number of qubits
`WeightedSumOperator.get_num_qubits_controlled`()	returns number of qubits controlled
`WeightedSumOperator.get_required_sum_qubits`(weights)	get required sum qubits
`WeightedSumOperator.required_ancillas`()	required ancillas
`WeightedSumOperator.required_ancillas_controlled`()	returns required ancillas controlled