SwapGate

class SwapGate(label=None)

Bases: 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:

\[\begin{split}SWAP = \begin{pmatrix} 1 & 0 & 0 & 0 \\ 0 & 0 & 1 & 0 \\ 0 & 1 & 0 & 0 \\ 0 & 0 & 0 & 1 \end{pmatrix}\end{split}\]

The gate is equivalent to a state swap and is a classical logic gate.

\[|a, b\rangle \rightarrow |b, a\rangle\]

Create new SWAP gate.

Methods Defined Here

control	Return a (multi-)controlled-SWAP gate.
inverse	Return inverse Swap gate (itself).

Attributes

condition_bits

Get Clbits in condition.

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

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.