QCC: the Quantum Compiler Collection

A technology-agnostic quantum circuit compiler, part of the Qevedo packages: it installs as qevedo-compiler and imports as qevedo.compiler.

Install

pip install qevedo-compiler

For development, from a checkout:

cd qcc/python
pip install -e ".[dev]"

openqasm 3.x is installed from PyPI. To develop both together, also install the sibling checkout: pip install -e ../../openqasm.

Usage

qcc compile examples/bell.qasm -o /tmp/out.qasm --device qevedo/compiler/profiles/all_to_all.yaml
qcc compile program.qasm -o /tmp/out.qasm --qasm-version 3 -I lib/

From Python:

from qevedo.compiler import compile_source, emit_qasm

circuit = compile_source(open("examples/bell.qasm").read())
print(emit_qasm(circuit))

The reference device profiles ship with the package, in qevedo/compiler/profiles/.

Input can be OpenQASM 2 or 3. Programs are checked by openqasm.analyze before lowering, so errors are reported with their location. The frontend supports qubit and bit registers, gate calls with constant parameters (broadcast over registers), measurements, resets, barriers, let aliases of qubits and const values. Control flow, gate modifiers, classical variables, timing and hardware qubits are rejected with an error until the IR supports them. Gate definitions are not inlined: gates stay named instructions for the decomposition pass.

Tests

pytest