SnapshotExpectationValue¶
- class SnapshotExpectationValue(label, op, single_shot=False, variance=False)[ソース]¶
ベースクラス:
qiskit.providers.aer.extensions.snapshot.Snapshot
Snapshot instruction for supported methods of Qasm simulator.
Create an expectation value snapshot instruction.
- パラメータ
label (str) – the snapshot label.
op (Operator) – operator to snapshot.
single_shot (bool) – return list for each shot rather than average [Default: False]
variance (bool) – compute variance of values [Default: False]
- 例外
ExtensionError – if snapshot is invalid.
バージョン 0.9.0 で非推奨: This instruction has been deprecated and will be removed no earlier than 3 months from the 0.9.0 release date. It has been superseded by the
qiskit.providers.aer.library.SaveExpectationValue
andqiskit.providers.aer.library.SaveExpectationValueVariance
instructions.Methods
Add a decomposition of the instruction to the SessionEquivalenceLibrary.
Assemble a QasmQobjInstruction for snapshot_expectation_value.
Validation of the arguments.
Set a classical equality condition on this instruction between the register or cbit
classical
and valueval
.Copy of the instruction.
Defines qubits to snapshot for all snapshot methods
Special case.
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.
Attributes
- decompositions¶
Get the decompositions of the instruction from the SessionEquivalenceLibrary.
- definition¶
Return definition in terms of other basic gates.
- duration¶
Get the duration.
- label¶
Return snapshot label
- name¶
Return the name.
- num_clbits¶
Return the number of clbits.
- num_qubits¶
Return the number of qubits.
- params¶
return instruction params.
- snapshot_type¶
Return snapshot type
- unit¶
Get the time unit of duration.