Qulacs: a fast and versatile quantum circuit simulator for research purpose

TL;DR

Qulacs is a high-performance, versatile quantum circuit simulator designed for research, offering speed enhancements through advanced numerical techniques and supporting various quantum computing research needs.

Contribution

The paper introduces Qulacs, a new quantum circuit simulator that is faster and more versatile than existing tools, with detailed explanations and benchmarks.

Findings

Qulacs achieves significant speed improvements in quantum circuit simulation.

The simulator supports a wide range of quantum algorithms and research applications.

Benchmark results demonstrate its efficiency compared to previous simulators.

Abstract

To explore the possibilities of a near-term intermediate-scale quantum algorithm and long-term fault-tolerant quantum computing, a fast and versatile quantum circuit simulator is needed. Here, we introduce Qulacs, a fast simulator for quantum circuits intended for research purpose. We show the main concepts of Qulacs, explain how to use its features via examples, describe numerical techniques to speed-up simulation, and demonstrate its performance with numerical benchmarks.