SwapGate
class SwapGate(label=None)
Bases: qiskit.circuit.gate.Gate
The SWAP gate.
This is a symmetric and Clifford gate.
Can be applied to a QuantumCircuit with the swap() method.
Circuit symbol:
q_0: ─X─
│
q_1: ─X─Matrix Representation:
The gate is equivalent to a state swap and is a classical logic gate.
Create new SWAP gate.
Methods Defined Here
control
SwapGate.control(num_ctrl_qubits=1, label=None, ctrl_state=None)
Return a (multi-)controlled-SWAP gate.
One control returns a CSWAP (Fredkin) gate.
Parameters
- num_ctrl_qubits (int) – number of control qubits.
- label (str or None) – An optional label for the gate [Default: None]
- ctrl_state (int or str or None) – control state expressed as integer, string (e.g. ‘110’), or None. If None, use all 1s.
Returns
controlled version of this gate.
Return type
inverse
SwapGate.inverse()
Return inverse Swap gate (itself).
Attributes
condition_bits
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
name
Return the name.
num_clbits
Return the number of clbits.
num_qubits
Return the number of qubits.
params
return instruction params.
unit
Get the time unit of duration.