qmbed 0.2.0

Thin Python bindings for the QMBED Rust core

QMBED for Python

QMBED is a Rust-native exact-diagonalization toolkit for quantum many-body workflows. The Python distribution includes:

• the native qmbed request API;
• a versioned quspin compatibility surface for workflow migration; and
• the compiled QMBED Rust core inside each supported platform wheel.

After the first registry release:

python -m pip install qmbed

Wheels target CPython 3.10–3.14 on Linux, Windows, and Apple Silicon. Intel macOS wheels stop at CPython 3.13 because the QuSpin compatibility surface depends on the last Numba release that published Intel Mac binaries.

import qmbed

basis = qmbed.SpinBasis(2)
terms = (
    qmbed.OperatorSpec(
        qmbed.OpProduct((qmbed.LocalOperator.Z, qmbed.LocalOperator.Z)),
        (qmbed.Coupling(1.0, (0, 1)),),
    ),
)
result = qmbed.eigsh(basis, terms, qmbed.EigshOptions(2))
print(result.eigenvalues)

See the QMBED documentation for supported bases, operators, solvers, observables, and compatibility boundaries.