🧭  Development

2025

• Oliver Brown of EPCC leads QuEST development (v4.3+)

2018

• Tyson Jones of QTechTheory leads QuEST development (v1.1 - v4.2)

2017

• Mihai Duta and Simon Benjamin begin QuEST development (v0.1 - v0.9)
• Anna (Ania) Brown leads QuEST development (v0.9 - v1.0)

🏆  Recognitions

2025

• QuEST is an invited project to unitaryHACK 2025 with challenges #600, #594, #599, #598, #596 and #595
• QuEST is a highlighted integration on the NVIDIA cuQuantum site

2024

• QuEST ranks 3rd in Quantum Insider's Top 63 Quantum Computer Simulators for 2024

2023

• QuESTlink wins a Wolfram Innovator Award

2021

• QuEST features in the final challenge of the ASC20-21 Student Supercomputer Challenge

2020

• QuEST's whitepaper ranks 11th in Scientific Reports' Top 100 in Physics

💪  Major features

2025

v4.2

• multi-controlled Trotter circuits
• non-unitary Trotter circuits (permitting e.g. imaginary-time evolution)
• noisy time evolution via the Lindbladian
• customisation environment variables
• restored NUMA awareness (woops)

v4.0

• multi-GPU deployment
• automatic deployment
• partial tracing
• multi-qubit projectors
• distance measures
• numerical tolerance control

2023

v3.7

• cuQuantum integration

v3.6

• AMD GPU support
• diagonal matrices

2021

v3.4

• MSVC (Windows) support

v3.3

• all-outcome probabilities
• multi-controlled Pauli rotations
• custom phase functions
• QFT

2020

v3.2

• Trotter-Suzuki circuits
• full-state diagonal operators

v3.1

• unit tests
• continuous integration

v3.0

• general any-sized matrices
• general any-sized Kraus maps
• inhomogeneous Pauli channels
• multi-Pauli expectation values
• multi-target Pauli rotations
• any-controlled operations
• density-matrix inner products
• custom error handling

2019

v2.1

• CMake build
• amplitude damping channel

2018

v2.0

• density matrices
• dephasing channels
• depolarising channels
• purity calculation
• fidelity calculation
• QASM generation
• input validation

v1.1

• C and C++ agnosticism
• unification of CPU and GPU backends

v1.0

• controlled axis rotations