OpenMP-Quantum

A small C library to support offloading quantum circuit computation via OpenMP target interface.

Applications in C/C++ can use this library to offload quantum circuit computation to a separate target device (e.g. another x86 core), which manages the communication with an actual quantum device or an emulator, keeping the main thread free for classical computation while waiting for the quantum result.

Components

Currently the main components of the library includes:

omp_q : Manages circuits, operators, and measurement interface. Output circuits into OpenQASM 2.0 and QIR.
simulate_qiskit: Invokes Python Qiskit to simulate QASM circuit.
simulate_lrz: Communicates with LRZ quantum daemon (QLM or quantum hardware).

Dependencies

To build this library, there are a few dependencies:

LLVM with OpenMP runtime (Currently only tested on x86_64, see cirrus-compile-llvm.sh or lrz-compile-llvm.sh for configuration example).
Python and Qiskit required for QASM simulation.
NLOPT optimizer for VQE/QAOA examples
JANSSON and RABBITMQ-C for communication with LRZ quantum daemon.

Scripts

Use lrz-compile-llvm.sh to build a LLVM with OpenMP runtime
Use build-lrz.sh to build libOMPQ and examples in build/
Use run-lrz.sh to run example