clifft-qiskit

A Qiskit BackendV2 provider for the Clifft near-Clifford simulator. Run Qiskit circuits on Clifft without hand-writing Stim.

See Clifft's Circuit Inputs guide for how this adapter fits with other Clifft input paths.

Install

pip install clifft-qiskit

Quickstart

from qiskit import QuantumCircuit
from clifft_qiskit import ClifftProvider

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

backend = ClifftProvider().get_backend("clifft")
counts = backend.run(qc, shots=1000).result().get_counts()
print(counts)

Supported basis

Clifford+T plus single-qubit rotations: h s sdg x y z cx cy cz t tdg rx ry rz (+ measure). Higher-level gates (ccx, u, controlled rotations, …) are decomposed into this basis by qiskit.transpile inside run().

Limitations

• Terminal measurement + counts only (no mid-circuit measurement / feedforward).
• reset and other non-unitary ops raise QiskitError.
• Single synchronous backend, all-to-all connectivity.

License

Apache-2.0.