qml.is_hermitian

is_hermitian(op)

Check if the operation is hermitian.

A hermitian matrix is a complex square matrix that is equal to its own adjoint

\[O^\dagger = O\]

Parameters

op (Operator) – the operator to check against

Returns

True if the operation is hermitian, False otherwise

Return type

bool

Note

This check might be expensive for large operators.

Example

>>> op = qml.X(0)
>>> qml.is_hermitian(op)
True
>>> op2 = qml.RX(0.54, wires=0)
>>> qml.is_hermitian(op2)
False

code/api/pennylane.is_hermitian

 

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