mimiq-qiskit

Qiskit bridge for MIMIQ.

A drop-in Qiskit BackendV2 that lets Qiskit users submit circuits to the MIMIQ cloud, or to any local MIMIQ simulator, without leaving the Qiskit ecosystem. Build your circuits with QuantumCircuit, hand them to a MimiqBackend, get back a familiar qiskit.result.Result.

Highlights:

• MimiqBackend: a BackendV2 covering the standard gate set, arbitrary UnitaryGates, and single-gate mid-circuit conditionals. A batch of circuits is submitted as a single MIMIQ job.
• Wide conversion coverage: named gates map directly, controlled gates become a native MIMIQ Control, and anything else is decomposed through its own Qiskit definition — so initialize, to_gate() blocks, and the rest of the standard library convert without a manual decomposition.
• MimiqSamplerV2 / MimiqEstimatorV2: native Qiskit V2 primitives. The estimator reads each Pauli term off the simulator state, so a deterministic circuit carries no shot noise at any term weight. A circuit that ends in an ensemble (mid-circuit measurement, reset, noise) is averaged over trajectories, and shots=N switches to hardware-style sampled estimation.
• MIMIQ-specific run options (fuse, canonicaldecompose, bonddim, entdim, timelimit, noisemodel, and more) pass straight through backend.run(...).

Repository layout

mimiq-qiskit/
├── docs/        # Sphinx documentation
├── examples/    # Runnable examples
├── src/         # Python package
└── tests/       # Pytest suite

Qiskit is Python-only, so this repo has no Julia side; the package lives at the repo root rather than under a nested mimiq-qiskit-python/ directory.

Quick start

from qiskit import QuantumCircuit
from mimiqlink import MimiqConnection
from mimiq_qiskit import MimiqBackend

# Authenticate against the MIMIQ cloud (opens a browser prompt).
conn = MimiqConnection()
conn.connect()

backend = MimiqBackend(conn)

qc = QuantumCircuit(2, 2)
qc.h(0)
qc.cx(0, 1)
qc.measure([0, 1], [0, 1])

job = backend.run(qc, shots=1000)
counts = job.result().get_counts()
print(counts)

Local MIMIQ simulators (anything implementing the mimiqcircuits.backends.Backend interface) wrap the same way; pass the backend instance instead of a connection. mimiq-exaqt is a state-vector simulator on PyPI, so this needs no credentials:

from exaqt import ExaqtQCS
from mimiq_qiskit import MimiqBackend

backend = MimiqBackend(ExaqtQCS(), num_qubits=24)

Primitives

Prefer the native primitives for sampling and expectation values. On a deterministic circuit the estimator is exact, with no shot noise:

from qiskit import QuantumCircuit
from qiskit.quantum_info import SparsePauliOp
from mimiq_qiskit import MimiqBackend, MimiqEstimatorV2

backend = MimiqBackend(conn)
estimator = MimiqEstimatorV2(backend)

qc = QuantumCircuit(2)
qc.h(0)
qc.cx(0, 1)

result = estimator.run([(qc, SparsePauliOp(["ZZ", "XX"], [1.0, 0.5]))]).result()
print(result[0].data.evs)

See examples/sampling.py and examples/expectation_values.py for runnable scripts, or examples/local_simulation.py to run without cloud credentials.

Installation

pip install mimiq-qiskit

Development

Branch model: active development on devel, releases on main.

uv sync             # install dev environment
uv run pytest -sxv  # run the test suite
uv build            # build wheel + sdist

The suite simulates against mimiq-exaqt, installed by uv sync as a dev dependency, and compares results to Qiskit's own Statevector. Every mapped gate is checked that way, because a mis-mapped gate or a dropped qubit-ordering convention produces a well-formed but wrong result that stubs and conversion round trips cannot see.

Repositories and releases

Development happens on the private GitLab repository (origin); the public GitHub mirror (public, qperfect-io/mimiq-qiskit) is kept in sync on the main branch and the public version tags:

• main and vX.Y.Z tags are pushed to both origin and public.
• vX.Y.Z-private tags live only on origin/devel and never reach the public remote.

On the public repository, pushing a vX.Y.Z tag triggers the PyPI publish and GitHub Pages documentation deploy. To develop against an unreleased mimiqcircuits, add the sibling checkout locally without committing it:

uv add --editable ../mimiqcircuits-python