Quantum circuit scheduler for QPUs usage optimization

TL;DR

This paper introduces a quantum circuit scheduler that combines multiple user circuits to reduce wait times on quantum computers, demonstrating that this approach maintains result quality despite increased noise.

Contribution

The paper proposes a novel scheduling technique for quantum circuits that optimizes QPU usage by executing combined circuits, reducing wait times without significantly affecting outcomes.

Findings

Reduced waiting times for quantum circuit execution.

Combined circuits maintain acceptable accuracy despite added noise.

Scheduling improves QPU utilization efficiency.

Abstract

Progress in the realm of quantum technologies is paving the way for a multitude of potential applications across different sectors. However, the reduced number of available quantum computers, their technical limitations and the high demand for their use are posing some problems for developers and researchers. Mainly, users trying to execute quantum circuits on these devices are usually facing long waiting times in the tasks queues. In this context, this work propose a technique to reduce waiting times and optimize quantum computers usage by scheduling circuits from different users into combined circuits that are executed at the same time. To validate this proposal, different widely known quantum algorithms have been selected and executed in combined circuits. The obtained results are then compared with the results of executing the same algorithms in an isolated way. This allowed us to measure the impact of the use of the scheduler. Among the obtained results, it has been possible to verify that the noise suffered by executing a combination of circuits through the proposed scheduler does not critically affect the outcomes.