qiskit.circuit.Measure¶
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class
Measure[source]¶ Quantum measurement in the computational basis.
Create new measurement instruction.
Methods
__init__()Create new measurement instruction.
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.
inverse()Invert this instruction.
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.
For a composite instruction, reverse the order of sub-instructions.
soft_compare(other)Soft comparison between gates.
validate_parameter(parameter)Instruction parameters has no validation or normalization.
Attributes
Get the decompositions of the instruction from the SessionEquivalenceLibrary.
Return definition in terms of other basic gates.
Get the duration.
return instruction params.
Get the time unit of duration.
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add_decomposition(decomposition)¶ Add a decomposition of the instruction to the SessionEquivalenceLibrary.
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assemble()¶ Assemble a QasmQobjInstruction
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broadcast_arguments(qargs, cargs)[source]¶ 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.
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c_if(classical, val)¶ Add classical condition on register classical and value val.
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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
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property
decompositions¶ Get the decompositions of the instruction from the SessionEquivalenceLibrary.
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property
definition¶ Return definition in terms of other basic gates.
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property
duration¶ Get the duration.
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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.)
- Returns
a fresh instruction for the inverse
- Return type
- Raises
CircuitError – if the instruction is not composite and an inverse has not been implemented for it.
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is_parameterized()¶ Return True .IFF. instruction is parameterized else False
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mirror()¶ DEPRECATED: use instruction.reverse_ops().
- Returns
- a new instruction with sub-instructions
reversed.
- Return type
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property
params¶ return instruction params.
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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];).
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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
- Raises
CircuitError – If n < 1.
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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
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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
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property
unit¶ Get the time unit of duration.
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validate_parameter(parameter)¶ Instruction parameters has no validation or normalization.
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