Noisy simulations

Noise models for analog quantum computers differ from those of digital quantum computers in that they describe the action of the environment in a continuous time fashion.

Generically, noise can be described as the coupling of the environment to the quantum system of interest via the general Hamiltonian

\[H_\mathrm{tot} = H + H_\mathrm{env} + H_\mathrm{coupling}\]

with \(H\), \(H_\mathrm{env}\) and \(H_\mathrm{coupling}\) as the Hamiltonians of the system, the environment and the coupling, respectively. On Qaptiva we can take two distinct paths to specify this joint Hamiltonian - either with the jump_operators, or the stochastic params_specification field of the analog QPU:

Jump operators
Stochastic noise