gate
Also known as the square-root NOT gate.
This gate implements the square-root of X, . Applying this gate twice in a row produces the standard Pauli-X gate (NOT gate). Like the Hadamard gate, creates an equal superposition state if the qubit is in the state , but with a different relative phase. On some hardwares, it is a native gate that can be implemented with a or X90 pulse.
For more information about the gate, see SXGate in the Qiskit Circuit Library.
Composer reference | OpenQASM reference | Q-sphere | Note about q-sphere representations |
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| sx 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. |
