Also known as the SXdg or square-root NOT-dagger gate.
This is the inverse of the gate. Applying it twice in a row produces the Pauli-X gate (NOT gate), since the NOT gate is its own inverse. Like the gate, this gate can be used to create an equal superposition state, and it too is natively implemented on some hardwares using an X90 pulse.
For more information about the gate, see SXdgGate in the Qiskit Circuit Library.
Composer reference | OpenQASM reference | Q-sphere | Note about q-sphere representations |
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| sxdg q[0];
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| The q-sphere representation shows the state after the gate operates on the initial equal superposition state where is the number of qubits needed to support the gate. |
