XGate¶
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class
XGate(label=None)[source]¶ Bases:
qiskit.circuit.gate.GateThe single-qubit Pauli-X gate (\(\sigma_x\)).
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
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decompositions¶ Get the decompositions of the instruction from the SessionEquivalenceLibrary.
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definition¶ Return definition in terms of other basic gates.
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duration¶ Get the duration.
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label¶ Return instruction label
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str
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params¶ return instruction params.
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unit¶ Get the time unit of duration.
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