- class SwitchCaseOp(target, cases, *, label=None)[source]¶
A circuit operation that executes one particular circuit block based on matching a given
targetagainst an ordered list of
values. The special value
CASE_DEFAULTcan be used to represent a default condition.
This is the low-level interface for creating a switch-case statement; in general, the circuit method
QuantumCircuit.switch_case()should be used as a context manager to access the builder interface. At the low level, you must ensure that all the circuit blocks contain equal numbers of qubits and clbits, and that the order the virtual bits of the containing circuit should be bound is the same for all blocks. This will likely mean that each circuit block is wider than its natural width, as each block must span the union of all the spaces covered by _any_ of the blocks.
target (Union[Clbit, ClassicalRegister]) – the runtime value to switch on.
cases (Iterable[Tuple[Any, QuantumCircuit]]) – an ordered iterable of the corresponding value of the
targetand the circuit block that should be executed if this is matched. There is no fall-through between blocks, and the order matters.
Create a new instruction.
name (str) – instruction name
num_qubits (int) – instruction’s qubit width
num_clbits (int) – instruction’s clbit width
params (list[int|float|complex|str|ndarray|list|ParameterExpression]) – list of parameters
duration (int or float) – instruction’s duration. it must be integer if
unit (str) – time unit of duration
label (str or None) – An optional label for identifying the instruction.
CircuitError – when the register is not in the correct format.
TypeError – when the optional label is provided, but it is not a string.
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
Return a lookup table from case labels to the circuit that would be executed in that case.
Return an iterable where each element is a 2-tuple whose first element is a tuple of jump values, and whose second is the single circuit block that is associated with those values.
Copy of the instruction.
Invert this instruction.
Return True .IFF.
Return a default OpenQASM string for the instruction.
Creates an instruction with gate repeated n amount of times.
Replace blocks and return new instruction.
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 instruction params.
Get the time unit of duration.