HGate

class HGate(label=None)

Single-qubit Hadamard gate.

This gate is a pi rotation about the X+Z axis, and has the effect of changing computation basis from \(|0\rangle,|1\rangle\) to \(|+\rangle,|-\rangle\) and vice-versa.

Circuit symbol:

     ┌───┐
q_0: ┤ H ├
     └───┘

Matrix Representation:

\[\begin{split}H = \frac{1}{\sqrt{2}} \begin{pmatrix} 1 & 1 \\ 1 & -1 \end{pmatrix}\end{split}\]

Create new H gate.

Attributes

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

Methods

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