DCXGate

class DCXGate

Double-CNOT gate.

A 2-qubit Clifford gate consisting of two back-to-back CNOTs with alternate controls.

          ┌───┐
q_0: ──■──┤ X ├
     ┌─┴─┐└─┬─┘
q_1: ┤ X ├──■──
     └───┘

This is a classical logic gate, equivalent to a CNOT-SWAP (CNS) sequence, and locally equivalent to an iSWAP.

\[\begin{split}DCX\ q_0, q_1 = \begin{pmatrix} 1 & 0 & 0 & 0 \\ 0 & 0 & 0 & 1 \\ 0 & 1 & 0 & 0 \\ 0 & 0 & 1 & 0 \end{pmatrix}\end{split}\]

Create new DCX gate.

Attributes

DCXGate.decompositions	Get the decompositions of the instruction from the SessionEquivalenceLibrary.
DCXGate.definition	Return definition in terms of other basic gates.
DCXGate.label	Return gate label
DCXGate.params	return instruction params.

Methods

DCXGate.add_decomposition(decomposition)	Add a decomposition of the instruction to the SessionEquivalenceLibrary.
DCXGate.assemble()	Assemble a QasmQobjInstruction
DCXGate.broadcast_arguments(qargs, cargs)	Validation and handling of the arguments and its relationship.
DCXGate.c_if(classical, val)	Add classical condition on register classical and value val.
DCXGate.control([num_ctrl_qubits, label, …])	Return controlled version of gate.
DCXGate.copy([name])	Copy of the instruction.
DCXGate.inverse()	Invert this instruction.
DCXGate.is_parameterized()	Return True .IFF.
DCXGate.mirror()	For a composite instruction, reverse the order of sub-gates.
DCXGate.power(exponent)	Creates a unitary gate as gate^exponent.
DCXGate.qasm()	Return a default OpenQASM string for the instruction.
DCXGate.repeat(n)	Creates an instruction with gate repeated n amount of times.
DCXGate.to_matrix()	Return a numpy.array for the DCX gate.