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Related Experiment Video

Updated: Jan 21, 2026

Gradient Echo Quantum Memory in Warm Atomic Vapor

Gradient Echo Quantum Memory in Warm Atomic Vapor

Published on: November 11, 2013

QuEST and High Performance Simulation of Quantum Computers.

Tyson Jones¹, Anna Brown², Ian Bush²

¹Department of Materials, University of Oxford, Parks Road, Oxford, OX1 3PH, United Kingdom. tyson.jones@materials.ox.ac.uk.

Scientific Reports

|July 26, 2019

Summary

This summary is machine-generated.

We introduce QuEST, the Quantum Exact Simulation Toolkit, a novel open-source simulator for quantum circuits. QuEST offers GPU acceleration and excellent performance scaling on multicore and distributed systems.

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Area of Science:

Quantum computing
Computational physics

Background:

Accurate simulation of quantum circuits is crucial for advancing quantum computing research.
Existing simulators have limitations in terms of scalability, accessibility, and performance.

Purpose of the Study:

Introduce QuEST (Quantum Exact Simulation Toolkit), a new open-source quantum circuit simulator.
Benchmark QuEST against other leading quantum simulation tools.
Highlight QuEST's capabilities in simulating complex quantum systems.

Main Methods:

Developed QuEST as a hybrid, multithreaded, distributed, and GPU-accelerated C library.
Simulated generic quantum circuits with various gate types on pure and mixed states, including decoherence.
Benchmarked QuEST on ARCUS and ARCHER supercomputers for circuits up to 38 qubits across 2048 nodes.

Main Results:

QuEST demonstrates excellent strong and weak scaling on multicore and distributed architectures.
Direct performance comparisons with ProjectQ on single machines were conducted.
Distribution strategies of QuEST, qHipster, and Quantum++ were analyzed.

Conclusions:

QuEST is a versatile and high-performance quantum circuit simulator.
Its design allows seamless deployment from laptops to supercomputers.
QuEST offers a significant advancement for quantum simulation research and development.