qbraid-qir 0.6.0

qBraid-SDK extension providing support for QIR conversions.

qBraid-SDK extension providing support for QIR conversions.

Motivation

This project aims to make QIR representations accessible via the qBraid-SDK transpiler, and by doing so, open the door to language-specific conversions from any and all high-level quantum languages supported by qbraid. See QIR Alliance: why do we need it?.

Installation

qBraid-QIR requires Python 3.10 or greater, and can be installed with pip as follows:

pip install qbraid-qir

Optional dependencies

qBraid-QIR offers integrations that require extra (optional) dependencies, which can be installed as follows:

For OpenQASM 3 to QIR conversions, install the qasm3 extra:

pip install 'qbraid-qir[qasm3]'

For Cirq to QIR conversions, install the cirq extra:

pip install 'qbraid-qir[cirq]'

For Qiskit to QIR conversions, install the qiskit extra:

pip install 'qbraid-qir[qiskit]'

For QIR to SQUIN conversions, install the squin extra:

pip install 'qbraid-qir[squin]'

Install from source

You can also install from source by cloning this repository and running a pip install command in the root directory of the repository:

git clone https://github.com/qBraid/qbraid-qir.git
cd qbraid-qir
pip install .

To include optional dependencies when installing from source, use the same "extras_require" format, e.g.

pip install '.[qasm3,cirq,squin]'

Check version

You can view the version of qbraid-qir you have installed within a Python shell as follows:

import qbraid_qir

qbraid_qir.__version__

Resources

• User Guide
• API Reference
• Example Notebooks
• Docker Containers

Usage examples

OpenQASM 3 conversions

from qbraid_qir import qasm3_to_qir

program = """
OPENQASM 3;
include "stdgates.inc";

qubit[2] q;
bit[2] c;

h q[0];
cx q[0], q[1];

measure q[0] -> c[0];
measure q[1] -> c[1];
"""

module = qasm3_to_qir(program, name="my-program")

ir = str(module)

Cirq conversions

import cirq
from qbraid_qir import cirq_to_qir

q0, q1 = cirq.LineQubit.range(2)

circuit = cirq.Circuit(
  cirq.H(q0),
  cirq.CNOT(q0, q1),
  cirq.measure(q0, q1)
)

module = cirq_to_qir(circuit, name="my-circuit")

ir = str(module)

Qiskit conversions

from qiskit import QuantumCircuit
from qbraid_qir import qiskit_to_qir

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

module = qiskit_to_qir(circuit, name="bell")

ir = str(module)

SQUIN conversions

from pyqir import BasicQisBuilder, SimpleModule
from qbraid_qir.squin import load

module = SimpleModule("bell", num_qubits=2, num_results=2)
qis = BasicQisBuilder(module.builder)

qis.h(module.qubits[0])
qis.cx(module.qubits[0], module.qubits[1])

squin_kernel = load(module.ir())

squin_kernel.print()

Architecture diagram

qBraid-SDK transpiler hub-and-spokes architecture with qbraid-qir integration (left) mapped to language specific conversion step in QIR abstraction layers (right).

Contributing

• Interested in contributing code, or making a PR? See CONTRIBUTING.md
• For feature requests and bug reports: Submit an issue
• For discussions, and specific questions about qBraid-QIR, or other topics, join our discord community
• For questions that are more suited for a forum, post to QCSE with the qbraid tag.
• By participating, you are expected to uphold our code of conduct.

Citation

If you use qBraid-QIR in your research, we kindly request that you cite it appropriately. The BibTeX entry below is aligned with the latest stable release. For the most up-to-date citation details, please refer to CITATION.cff.

@software{Gupta_qBraid-QIR_Python_package_2026,
  author = {Gupta, Harshit and Hill, Ryan James},
  license = {Apache-2.0},
  month = feb,
  title = {{qBraid-QIR: Python package for QIR conversions, integrations, and utilities.}},
  url = {https://github.com/qBraid/qbraid-qir},
  version = {0.5.1},
  year = {2026}
}

Acknowledgements

This project was conceived in cooperation with the Quantum Open Source Foundation (QOSF).

License

Apache-2.0 License