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qiskit.circuit.library.SXGate.control

SXGate.control(num_ctrl_qubits=1, label=None, ctrl_state=None)[source]

Return a (multi-)controlled-SX gate.

One control returns a CSX gate.

Parameters
  • num_ctrl_qubits (int) – number of control qubits.

  • label (str or None) – An optional label for the gate [Default: None]

  • ctrl_state (int or str or None) – control state expressed as integer, string (e.g. ‘110’), or None. If None, use all 1s.

Returns

controlled version of this gate.

Return type

ControlledGate