qiskit.extensions.Initialize

class Initialize(params)

Complex amplitude initialization.

Class that implements the (complex amplitude) initialization of some flexible collection of qubit registers (assuming the qubits are in the zero state). Note that Initialize is an Instruction and not a Gate since it contains a reset instruction, which is not unitary.

Create new initialize composite.

params (list): vector of complex amplitudes to initialize to

__init__(params)

Create new initialize composite.

params (list): vector of complex amplitudes to initialize to

Methods

__init__(params)	Create new initialize composite.
add_decomposition(decomposition)	Add a decomposition of the instruction to the SessionEquivalenceLibrary.
assemble()	Assemble a QasmQobjInstruction
broadcast_arguments(qargs, cargs)	Validation of the arguments.
c_if(classical, val)	Add classical condition on register classical and value val.
copy([name])	Copy of the instruction.
gates_to_uncompute()	Call to create a circuit with gates that take the desired vector to zero.
inverse()	Invert this instruction.
is_parameterized()	Return True .IFF.
mirror()	DEPRECATED: use instruction.reverse_ops().
qasm()	Return a default OpenQASM string for the instruction.
repeat(n)	Creates an instruction with gate repeated n amount of times.
reverse_ops()	For a composite instruction, reverse the order of sub-instructions.
validate_parameter(parameter)	Initialize instruction parameter can be int, float, and complex.

Attributes

decompositions	Get the decompositions of the instruction from the SessionEquivalenceLibrary.
definition	Return definition in terms of other basic gates.
duration	Get the duration.
params	return instruction params.
unit	Get the time unit of duration.

add_decomposition(decomposition)

Add a decomposition of the instruction to the SessionEquivalenceLibrary.

assemble()

Assemble a QasmQobjInstruction

broadcast_arguments(qargs, cargs)

Validation of the arguments.

パラメータ

• qargs (List) – List of quantum bit arguments.

• cargs (List) – List of classical bit arguments.

列挙

Tuple(List, List) – A tuple with single arguments.

例外

CircuitError – If the input is not valid. For example, the number of arguments does not match the gate expectation.

c_if(classical, val)

Add classical condition on register classical and value val.

copy(name=None)

Copy of the instruction.

パラメータ

name (str) – name to be given to the copied circuit, if None then the name stays the same.

戻り値

a copy of the current instruction, with the name

updated if it was provided

戻り値の型

qiskit.circuit.Instruction

property decompositions

Get the decompositions of the instruction from the SessionEquivalenceLibrary.

property definition

Return definition in terms of other basic gates.

property duration

Get the duration.

gates_to_uncompute()

Call to create a circuit with gates that take the desired vector to zero.

戻り値

circuit to take self.params vector to \(|{00\ldots0}\rangle\)

戻り値の型

QuantumCircuit

inverse()

Invert this instruction.

If the instruction is composite (i.e. has a definition), then its definition will be recursively inverted.

Special instructions inheriting from Instruction can implement their own inverse (e.g. T and Tdg, Barrier, etc.)

戻り値

a fresh instruction for the inverse

戻り値の型

qiskit.circuit.Instruction

例外

CircuitError – if the instruction is not composite and an inverse has not been implemented for it.

is_parameterized()

Return True .IFF. instruction is parameterized else False

mirror()

DEPRECATED: use instruction.reverse_ops().

戻り値

a new instruction with sub-instructions

reversed.

戻り値の型

qiskit.circuit.Instruction

property params

return instruction params.

qasm()

Return a default OpenQASM string for the instruction.

Derived instructions may override this to print in a different format (e.g. measure q[0] -> c[0];).

repeat(n)

Creates an instruction with gate repeated n amount of times.

パラメータ

n (int) – Number of times to repeat the instruction

戻り値

Containing the definition.

戻り値の型

qiskit.circuit.Instruction

例外

CircuitError – If n < 1.

reverse_ops()

For a composite instruction, reverse the order of sub-instructions.

This is done by recursively reversing all sub-instructions. It does not invert any gate.

戻り値

a new instruction with

sub-instructions reversed.

戻り値の型

qiskit.circuit.Instruction

property unit

Get the time unit of duration.

validate_parameter(parameter)

Initialize instruction parameter can be int, float, and complex.