YGate¶
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class
YGate(label=None)[source]¶ Bases:
qiskit.circuit.gate.GateThe single-qubit Pauli-Y gate (\(\sigma_y\)).
Matrix Representation:
\[\begin{split}Y = \begin{pmatrix} 0 & -i \\ i & 0 \end{pmatrix}\end{split}\]Circuit symbol:
┌───┐ q_0: ┤ Y ├ └───┘Equivalent to a \(\pi\) radian rotation about the Y axis.
Note
A global phase difference exists between the definitions of \(RY(\pi)\) and \(Y\).
\[\begin{split}RY(\pi) = \begin{pmatrix} 0 & -1 \\ 1 & 0 \end{pmatrix} = -i Y\end{split}\]The gate is equivalent to a bit and phase flip.
\[\begin{split}|0\rangle \rightarrow i|1\rangle \\ |1\rangle \rightarrow -i|0\rangle\end{split}\]Create new Y gate.
Methods Defined Here
Return a (multi-)controlled-Y gate.
Return inverted Y gate (\(Y{\dagger} = Y\))
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
- Return type
str
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params¶ return instruction params.
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unit¶ Get the time unit of duration.
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