- class Initialize(params, num_qubits=None)[source]¶
Complex amplitude initialization.
Class that initializes some flexible collection of qubit registers, implemented by calling the
qiskit.extensions.StatePreparationClass. 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 (str, list, int or Statevector) –
Statevector: Statevector to initialize to.
list: vector of complex amplitudes to initialize to.
string: labels of basis states of the Pauli eigenstates Z, X, Y. See
Statevector.from_label(). Notice the order of the labels is reversed with respect to the qubit index to be applied to. Example label ‘01’ initializes the qubit zero to \(|1\rangle\) and the qubit one to \(|0\rangle\).
int: an integer that is used as a bitmap indicating which qubits to initialize to \(|1\rangle\). Example: setting params to 5 would initialize qubit 0 and qubit 2 to \(|1\rangle\) and qubit 1 to \(|0\rangle\).
num_qubits (int) – This parameter is only used if params is an int. Indicates the total number of qubits in the initialize call. Example: initialize covers 5 qubits and params is 3. This allows qubits 0 and 1 to be initialized to \(|1\rangle\) and the remaining 3 qubits to be initialized to \(|0\rangle\).
Add a decomposition of the instruction to the SessionEquivalenceLibrary.
Assemble a QasmQobjInstruction
Validation of the arguments.
Set a classical equality condition on this instruction between the register or cbit
Copy of the instruction.
Call to create a circuit with gates that take the desired vector to zero.
Invert this instruction.
Return True .IFF.
Return a default OpenQASM string for the instruction.
Creates an instruction with gate repeated n amount of times.
For a composite instruction, reverse the order of sub-instructions.
Soft comparison between gates.
Instruction parameters has no validation or normalization.
Get Clbits in condition.
Get the decompositions of the instruction from the SessionEquivalenceLibrary.
Return definition in terms of other basic gates.
Get the duration.
Return instruction label
Return the name.
Return the number of clbits.
Return the number of qubits.
Return initialize params.
Get the time unit of duration.