XGate¶
- class XGate(label=None)[source]¶
Bases:
Gate
The single-qubit Pauli-X gate (\(\sigma_x\)).
Can be applied to a
QuantumCircuit
with thex()
method.Matrix Representation:
\[\begin{split}X = \begin{pmatrix} 0 & 1 \\ 1 & 0 \end{pmatrix}\end{split}\]Circuit symbol:
┌───┐ q_0: ┤ X ├ └───┘
Equivalent to a \(\pi\) radian rotation about the X axis.
Note
A global phase difference exists between the definitions of \(RX(\pi)\) and \(X\).
\[\begin{split}RX(\pi) = \begin{pmatrix} 0 & -i \\ -i & 0 \end{pmatrix} = -i X\end{split}\]The gate is equivalent to a classical bit flip.
\[\begin{split}|0\rangle \rightarrow |1\rangle \\ |1\rangle \rightarrow |0\rangle\end{split}\]Create new X gate.
Methods Defined Here
Return a (multi-)controlled-X gate.
Return inverted X 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.