pyqpanda3.vqcircuit.VQCResult Class Reference

Public Member Functions
None	__init__ (self)
	init(self: vqcircuit.VQCResult) -> None
	at (self, *args, **kwargs)
	at(self: vqcircuit.VQCResult, idxs: list[int]) -> QPanda::QCircuit
float	expval_at (self, list[int] idxs)
	expval_at(self: vqcircuit.VQCResult, idxs: list[int]) -> float
list[float]	expval_hamiltonian (self, hamiltonian, ExpectationType exp_type=...)
	expval_hamiltonian(*args, **kwargs) Overloaded function.
float	expval_hamiltonian (self, hamiltonian, list[int] idx_s, ExpectationType exp_type=...)
	expval_hamiltonian(*args, **kwargs) Overloaded function.
list[float]	expval_pauli_operator (self, pauli_operator, ExpectationType exp_type=...)
	expval_pauli_operator(*args, **kwargs) Overloaded function.
float	expval_pauli_operator (self, pauli_operator, list[int] idx_s, ExpectationType exp_type=...)
	expval_pauli_operator(*args, **kwargs) Overloaded function.

Constructor & Destructor Documentation

__init__()

None pyqpanda3.vqcircuit.VQCResult.__init__

(

self

)

init(self: vqcircuit.VQCResult) -> None

Default constructor for the VQCircuitResult class.

This constructor initializes a new instance of the VQCircuitResult class. The VQCircuitResult class is used to store and manage a collection of QCircuit objects generated by a VQCircuit.

Member Function Documentation

at()

pyqpanda3.vqcircuit.VQCResult.at	(		self,
		*	args,
		**	kwargs )

at(self: vqcircuit.VQCResult, idxs: list[int]) -> QPanda::QCircuit

Accesses a QCircuit object at a specified index.

This method retrieves a reference to the QCircuit object at the specified index, which is determined by the provided vector of qubit indices. The vector should contain the indices of the qubits that correspond to the desired QCircuit.

Parameters

idxs	the specified index

Returns

a reference to the QCircuit object at the specified index

expval_at()

float pyqpanda3.vqcircuit.VQCResult.expval_at	(		self,
		list[int]	idxs )

expval_at(self: vqcircuit.VQCResult, idxs: list[int]) -> float

Calculates the expectation value of a QCircuit object at a specified index.

Parameters

idxs	the specified index

Returns

the expectation value of a QCircuit object at a specified index.

expval_hamiltonian() [1/2]

list[float] pyqpanda3.vqcircuit.VQCResult.expval_hamiltonian	(		self,
			hamiltonian,
		ExpectationType	exp_type = ... )

expval_hamiltonian(*args, **kwargs) Overloaded function.

1. expval_hamiltonian(self: vqcircuit.VQCResult, hamiltonian: QPanda::Hamiltonian, exp_type: vqcircuit.ExpectationType = <ExpectationType.THEORETICAL: 0>) -> list[float]

Computes the expectation values of a Hamiltonian for all QCircuit objects in the batch.

This function calculates the expectation value of a given Hamiltonian for each QCircuit in the batch represented by the VQCircuitResult. The expectation value can be computed using either theoretical or sampled methods, depending on the specified \\type\\\\ parameter.

Parameters

hamiltonian	the a Hamiltonian object
exp_type	Not it only support ExpectationType.THEORETICAL

Returns

the expectation values of a Hamiltonian for all QCircuit objects in the batch.

1. expval_hamiltonian(self: vqcircuit.VQCResult, hamiltonian: QPanda::Hamiltonian, idx_s: list[int], exp_type: vqcircuit.ExpectationType = <ExpectationType.THEORETICAL: 0>) -> float

Computes the expectation value of a Hamiltonian for a specific QCircuit object identified by multi-dimensional indexs.

This function calculates the expectation value of a given Hamiltonian for a specific QCircuit object in a collection, identified by the multi-dimensional index \\idx_s\\\\. The expectation value can be computed using either a theoretical or sampled method,depending on the specified \\type\\\\ parameter.

Parameters

hamiltonian	the a Hamiltonian object
idx_s	multi-dimensional indexs.
exp_type	Not it only support ExpectationType.THEORETICAL

expval_hamiltonian() [2/2]

float pyqpanda3.vqcircuit.VQCResult.expval_hamiltonian	(		self,
			hamiltonian,
		list[int]	idx_s,
		ExpectationType	exp_type = ... )

expval_hamiltonian(*args, **kwargs) Overloaded function.

1. expval_hamiltonian(self: vqcircuit.VQCResult, hamiltonian: QPanda::Hamiltonian, exp_type: vqcircuit.ExpectationType = <ExpectationType.THEORETICAL: 0>) -> list[float]

Computes the expectation values of a Hamiltonian for all QCircuit objects in the batch.

This function calculates the expectation value of a given Hamiltonian for each QCircuit in the batch represented by the VQCircuitResult. The expectation value can be computed using either theoretical or sampled methods, depending on the specified \\type\\\\ parameter.

Parameters

hamiltonian	the a Hamiltonian object
exp_type	Not it only support ExpectationType.THEORETICAL

Returns

the expectation values of a Hamiltonian for all QCircuit objects in the batch.

1. expval_hamiltonian(self: vqcircuit.VQCResult, hamiltonian: QPanda::Hamiltonian, idx_s: list[int], exp_type: vqcircuit.ExpectationType = <ExpectationType.THEORETICAL: 0>) -> float

Computes the expectation value of a Hamiltonian for a specific QCircuit object identified by multi-dimensional indexs.

This function calculates the expectation value of a given Hamiltonian for a specific QCircuit object in a collection, identified by the multi-dimensional index \\idx_s\\\\. The expectation value can be computed using either a theoretical or sampled method,depending on the specified \\type\\\\ parameter.

Parameters

hamiltonian	the a Hamiltonian object
idx_s	multi-dimensional indexs.
exp_type	Not it only support ExpectationType.THEORETICAL

expval_pauli_operator() [1/2]

list[float] pyqpanda3.vqcircuit.VQCResult.expval_pauli_operator	(		self,
			pauli_operator,
		ExpectationType	exp_type = ... )

expval_pauli_operator(*args, **kwargs) Overloaded function.

1. expval_pauli_operator(self: vqcircuit.VQCResult, pauli_operator: QPanda::PauliOperator, exp_type: vqcircuit.ExpectationType = <ExpectationType.THEORETICAL: 0>) -> list[float]

Computes the expectation value of a Pauli operator for all QCircuit objects in the batch.

This function calculates the expectation value of a given Pauli operator for each QCircuit in the batch represented by the VQCircuitResult. The expectation value can be computed using either theoretical or sampled methods, depending on the specified \\type\\\\ parameter.

Parameters

pauli_operator	the a Pauli operator object
exp_type	Not it only support ExpectationType.THEORETICAL

Returns

the expectation values of a Pauli operator for all QCircuit objects in the batch.

1. expval_pauli_operator(self: vqcircuit.VQCResult, pauli_operator: QPanda::PauliOperator, idx_s: list[int], exp_type: vqcircuit.ExpectationType = <ExpectationType.THEORETICAL: 0>) -> float

Computes the expectation value of a Pauli operator for a specific QCircuit object identified by multi-dimensional indexs.

This function calculates the expectation value of a given Pauli operator for a specific QCircuit object in a collection, identified by the multi-dimensional index \\idx_s\\\\. The expectation value can be computed using either a theoretical or sampled method,depending on the specified \\type\\\\ parameter.

Parameters

pauli_operator	the a Pauli operator object
idx_s	multi-dimensional indexs.
exp_type	Not it only support ExpectationType.THEORETICAL

expval_pauli_operator() [2/2]

float pyqpanda3.vqcircuit.VQCResult.expval_pauli_operator	(		self,
			pauli_operator,
		list[int]	idx_s,
		ExpectationType	exp_type = ... )

expval_pauli_operator(*args, **kwargs) Overloaded function.

1. expval_pauli_operator(self: vqcircuit.VQCResult, pauli_operator: QPanda::PauliOperator, exp_type: vqcircuit.ExpectationType = <ExpectationType.THEORETICAL: 0>) -> list[float]

Computes the expectation value of a Pauli operator for all QCircuit objects in the batch.

This function calculates the expectation value of a given Pauli operator for each QCircuit in the batch represented by the VQCircuitResult. The expectation value can be computed using either theoretical or sampled methods, depending on the specified \\type\\\\ parameter.

Parameters

pauli_operator	the a Pauli operator object
exp_type	Not it only support ExpectationType.THEORETICAL

Returns

the expectation values of a Pauli operator for all QCircuit objects in the batch.

1. expval_pauli_operator(self: vqcircuit.VQCResult, pauli_operator: QPanda::PauliOperator, idx_s: list[int], exp_type: vqcircuit.ExpectationType = <ExpectationType.THEORETICAL: 0>) -> float

Computes the expectation value of a Pauli operator for a specific QCircuit object identified by multi-dimensional indexs.

This function calculates the expectation value of a given Pauli operator for a specific QCircuit object in a collection, identified by the multi-dimensional index \\idx_s\\\\. The expectation value can be computed using either a theoretical or sampled method,depending on the specified \\type\\\\ parameter.

Parameters

pauli_operator	the a Pauli operator object
idx_s	multi-dimensional indexs.
exp_type	Not it only support ExpectationType.THEORETICAL

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The documentation for this class was generated from the following file:

• pyqpanda3/vqcircuit.py