qiskit.aqua.components.uncertainty_models.MultivariateVariationalDistribution

class MultivariateVariationalDistribution(num_qubits, var_form, params, low=None, high=None)

The Multivariate Variational Distribution.

Parameters

• num_qubits (Union[List[int], ndarray]) – List with the number of qubits per dimension

• var_form (QuantumCircuit) – Variational form

• params (Union[List[float], ndarray]) – Parameters for variational form

• low (Union[List[float], ndarray, None]) – List with the lower bounds per dimension, set to 0 for each dimension if None

• high (Union[List[float], ndarray, None]) – List with the upper bounds per dimension, set to 1 for each dimension if None

__init__(num_qubits, var_form, params, low=None, high=None)

Parameters

• num_qubits (Union[List[int], ndarray]) – List with the number of qubits per dimension

• var_form (QuantumCircuit) – Variational form

• params (Union[List[float], ndarray]) – Parameters for variational form

• low (Union[List[float], ndarray, None]) – List with the lower bounds per dimension, set to 0 for each dimension if None

• high (Union[List[float], ndarray, None]) – List with the upper bounds per dimension, set to 1 for each dimension if None

Methods

__init__(num_qubits, var_form, params[, …])	type num_qubits Union[List[int], ndarray]
build(qc, q[, q_ancillas, params])
build_controlled(qc, q, q_control[, …])	Adds corresponding controlled sub-circuit to given circuit
build_controlled_inverse(qc, q, q_control[, …])	Adds controlled inverse of corresponding sub-circuit to given circuit
build_controlled_inverse_power(qc, q, …[, …])	Adds controlled, inverse, power of corresponding circuit.
build_controlled_power(qc, q, q_control, power)	Adds controlled power of corresponding circuit.
build_inverse(qc, q[, q_ancillas])	Adds inverse of corresponding sub-circuit to given circuit
build_inverse_power(qc, q, power[, q_ancillas])	Adds inverse power of corresponding circuit.
build_power(qc, q, power[, q_ancillas])	Adds power of corresponding circuit.
get_num_qubits()	returns number of qubits
get_num_qubits_controlled()	returns number of qubits controlled
pdf_to_probabilities(pdf, low, high, num_values)	pdf to probabilities
required_ancillas()	returns required ancillas
required_ancillas_controlled()	returns required ancillas controlled
set_probabilities(quantum_instance)	Set Probabilities

Attributes

dimension	returns dimensions
high	returns high
low	returns low
num_qubits	returns num qubits
num_target_qubits	Returns the number of target qubits
num_values	returns number of values
probabilities	returns probabilities
probabilities_vector	returns probabilities vector
values	returns values

build(qc, q, q_ancillas=None, params=None)

build_controlled(qc, q, q_control, q_ancillas=None, use_basis_gates=True)

Adds corresponding controlled sub-circuit to given circuit

Parameters

• qc (QuantumCircuit) – quantum circuit

• q (list) – list of qubits (has to be same length as self._num_qubits)

• q_control (Qubit) – control qubit

• q_ancillas (list) – list of ancilla qubits (or None if none needed)

• use_basis_gates (bool) – use basis gates for expansion of controlled circuit

build_controlled_inverse(qc, q, q_control, q_ancillas=None, use_basis_gates=True)

Adds controlled inverse of corresponding sub-circuit to given circuit

Parameters

• qc (QuantumCircuit) – quantum circuit

• q (list) – list of qubits (has to be same length as self._num_qubits)

• q_control (Qubit) – control qubit

• q_ancillas (list) – list of ancilla qubits (or None if none needed)

• use_basis_gates (bool) – use basis gates for expansion of controlled circuit

build_controlled_inverse_power(qc, q, q_control, power, q_ancillas=None, use_basis_gates=True)

Adds controlled, inverse, power of corresponding circuit. May be overridden if a more efficient implementation is possible

build_controlled_power(qc, q, q_control, power, q_ancillas=None, use_basis_gates=True)

Adds controlled power of corresponding circuit. May be overridden if a more efficient implementation is possible

build_inverse(qc, q, q_ancillas=None)

Adds inverse of corresponding sub-circuit to given circuit

Parameters

• qc (QuantumCircuit) – quantum circuit

• q (list) – list of qubits (has to be same length as self._num_qubits)

• q_ancillas (list) – list of ancilla qubits (or None if none needed)

build_inverse_power(qc, q, power, q_ancillas=None)

Adds inverse power of corresponding circuit. May be overridden if a more efficient implementation is possible

build_power(qc, q, power, q_ancillas=None)

Adds power of corresponding circuit. May be overridden if a more efficient implementation is possible

property dimension

returns dimensions

get_num_qubits()

returns number of qubits

get_num_qubits_controlled()

returns number of qubits controlled

property high

returns high

property low

returns low

property num_qubits

returns num qubits

property num_target_qubits

Returns the number of target qubits

property num_values

returns number of values

static pdf_to_probabilities(pdf, low, high, num_values)

pdf to probabilities

property probabilities

returns probabilities

property probabilities_vector

returns probabilities vector

required_ancillas()

returns required ancillas

required_ancillas_controlled()

returns required ancillas controlled

set_probabilities(quantum_instance)

Set Probabilities

Parameters

quantum_instance (QuantumInstance) – Quantum Instance

property values

returns values