quchip.backend¶

Backend selection and concrete backend implementations.

quchip ships two backends:

QuTiPBackend: CPU, qutip.Qobj operators, process-parallel sweeps with loky. Default backend.
DynamiqsBackend: JAX/dynamiqs, fully differentiable, native vmap batched solves. Optional extra (pip install quchip[dynamiqs]).

The public entry points are get_default_backend() / set_default_backend() / reset_default_backend().

Example

>>> from quchip.backend import get_default_backend, set_default_backend
>>> backend = get_default_backend()  # QuTiPBackend by default
>>> set_default_backend("dynamiqs")

Functions

`get_default_backend`()	Return the active default backend.
`reset_default_backend`()	Clear the cached default backend.
`set_default_backend`(backend)	Set the default backend for later calculations.

Modules

`containers`	Backend-agnostic solver-result and IR-lowering containers.
`dynamiqs`	Dynamiqs backend: JAX-native solver for differentiable, vmappable simulation.
`protocol`	Backend protocol and backend-agnostic solver-result containers.
`qutip`	QuTiP backend implementation of the `quchip.backend.protocol` contract.