XGate¶
- class XGate(label=None)[source]¶
The 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.
Attributes
Get the decompositions of the instruction from the SessionEquivalenceLibrary.
Return definition in terms of other basic gates.
Return gate label
return instruction params.
Methods
XGate.add_decomposition
(decomposition)Add a decomposition of the instruction to the SessionEquivalenceLibrary.
Assemble a QasmQobjInstruction
XGate.broadcast_arguments
(qargs, cargs)Validation and handling of the arguments and its relationship.
XGate.c_if
(classical, val)Add classical condition on register classical and value val.
XGate.control
([num_ctrl_qubits, label, …])Return a (mutli-)controlled-X gate.
XGate.copy
([name])Copy of the instruction.
Return inverted X gate (itself).
Return True .IFF.
For a composite instruction, reverse the order of sub-gates.
XGate.power
(exponent)Creates a unitary gate as gate^exponent.
Return a default OpenQASM string for the instruction.
XGate.repeat
(n)Creates an instruction with gate repeated n amount of times.
Return a numpy.array for the X gate.