qml.estimator.compact_hamiltonian.VibrationalHamiltonian¶

class VibrationalHamiltonian(num_modes, grid_size, taylor_degree, one_norm=None)[source]¶

Bases: object

For a vibrational Hamiltonian, stores the minimum necessary information pertaining to resource estimation.

The form of this Hamiltonian is described in arXiv:2504.10602.

Parameters:

num_modes (int) – number of vibrational modes
grid_size (int) – number of grid points used to discretize each mode
taylor_degree (int) – degree of the Taylor expansion used in the vibrational representation
one_norm (float | None) – the one-norm of the Hamiltonian

Raises:

TypeError – if num_modes, grid_size, or taylor_degree is not a positive integer
TypeError – if one_norm is provided but is not a non-negative float or integer

Attributes

code/api/pennylane.estimator.compact_hamiltonian.VibrationalHamiltonian

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