Skip to main contentIBM Quantum Documentation
You are viewing the API reference for an old version of Qiskit SDK. Switch to latest version

SaveProbabilitiesDict

SaveProbabilitiesDict(num_qubits, label='probabilities_dict', unnormalized=False, pershot=False, conditional=False) GitHub(opens in a new tab)

Bases: qiskit.providers.aer.library.save_instructions.save_data.SaveAverageData

Save measurement outcome probabilities dict.

Instruction to save measurement probabilities dict.

Parameters

  • num_qubits (int) – the number of qubits for the snapshot type.
  • label (str) – the key for retrieving saved data from results.
  • unnormalized (bool) – If True return save the unnormalized accumulated probabilities over all shots [Default: False].
  • pershot (bool) – if True save a list of probabilities for each shot of the simulation rather than the average over all shots [Default: False].
  • conditional (bool) – if True save the probabilities data conditional on the current classical register values [Default: False].

Methods

add_decomposition

SaveProbabilitiesDict.add_decomposition(decomposition)

Add a decomposition of the instruction to the SessionEquivalenceLibrary.

assemble

SaveProbabilitiesDict.assemble()

Return the QasmQobjInstruction for the intructions.

broadcast_arguments

SaveProbabilitiesDict.broadcast_arguments(qargs, cargs)

Validation of the arguments.

Parameters

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

Yields

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

Raises

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

c_if

SaveProbabilitiesDict.c_if(classical, val)

Set a classical equality condition on this instruction between the register or cbit classical and value val.

Note

This is a setter method, not an additive one. Calling this multiple times will silently override any previously set condition; it does not stack.

copy

SaveProbabilitiesDict.copy(name=None)

Copy of the instruction.

Parameters

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

Returns

a copy of the current instruction, with the name

updated if it was provided

Return type

qiskit.circuit.Instruction

inverse

SaveProbabilitiesDict.inverse()

Special case. Return self.

is_parameterized

SaveProbabilitiesDict.is_parameterized()

Return True .IFF. instruction is parameterized else False

mirror

SaveProbabilitiesDict.mirror()

DEPRECATED: use instruction.reverse_ops().

Returns

a new instruction with sub-instructions

reversed.

Return type

qiskit.circuit.Instruction

qasm

SaveProbabilitiesDict.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

SaveProbabilitiesDict.repeat(n)

Creates an instruction with gate repeated n amount of times.

Parameters

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

Returns

Containing the definition.

Return type

qiskit.circuit.Instruction

Raises

CircuitError – If n < 1.

reverse_ops

SaveProbabilitiesDict.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.

Returns

a new instruction with

sub-instructions reversed.

Return type

qiskit.circuit.Instruction

soft_compare

SaveProbabilitiesDict.soft_compare(other)

Soft comparison between gates. Their names, number of qubits, and classical bit numbers must match. The number of parameters must match. Each parameter is compared. If one is a ParameterExpression then it is not taken into account.

Parameters

other (instruction) – other instruction.

Returns

are self and other equal up to parameter expressions.

Return type

bool

validate_parameter

SaveProbabilitiesDict.validate_parameter(parameter)

Instruction parameters has no validation or normalization.


Attributes

condition_bits

Get Clbits in condition.

Return type

List[Clbit]

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 instruction label

Return type

str

params

return instruction params.

unit

Get the time unit of duration.

Was this page helpful?