DifferentiableUnitary

class DifferentiableUnitary

Bases: Unitary

A differentiable unitary-valued function.

A DifferentiableUnitary inherits from Unitary and additionally exposes the get_grad() abstract method and the get_unitary_and_grad() method.

Attributes

dim	The matrix dimension for this unitary.
num_params	The number of real parameters this unitary-valued function takes.
num_qudits	The number of qudits this unitary can act on.
radixes	The number of orthogonal states for each qudit.

Methods

check_parameters(params)	Check parameters are valid and match the unitary.
get_grad([params])	Return the gradient for the unitary map as an np.ndarray.
get_unitary([params])	Map real-valued params to a UnitaryMatrix.
get_unitary_and_grad([params])	Return a tuple combining the outputs of get_unitary and get_grad.
is_constant()	Return true if this unitary doesn't take parameters.
is_parameterized()	Return true if this unitary is parameterized.
is_qubit_only()	Return true if this unitary can only act on qubits.
is_qudit_only(radix)	Return true if this unitary can only act on radix-qudits.
is_qutrit_only()	Return true if this unitary can only act on qutrits.
is_self_inverse([params])	Checks whether the unitary is its own inverse.