HQS Quantum Simulations

HQS Quantum Simulations is a Karlsruhe-based software company that develops quantum algorithms and tooling for simulating molecules and materials, aimed at chemistry, pharmaceutical, and materials R&D users. Its stack centres on noise models and error-mitigation methods (including a noise-modeling application) intended to extract useful results from noisy intermediate-scale quantum processors, alongside algorithm components for computing molecular properties. It sits among the small group of European quantum-software startups that sell platform-agnostic tools and collaborate with hardware vendors rather than building its own quantum processors.

AI-written profile · not yet reviewed · 10 October 2026

Headquarters: Karlsruhe, Germany
Founded: 2017
Status: Private

algorithms software error correction

Coverage

Quantum Computing Report9 October 2026

Quantinuum and HQS Simulate 21-Spin NMR Spectrum on 42 Qubits With 1,400+ Two-Qubit Gate Circuits

Quantinuum and HQS Quantum Simulations used the H2-1 trapped-ion processor to simulate a 21-spin NMR spectrum for 1,2-di-tert-butyl-diphosphane, requiring 42 qubits and circuits with over 1,400 two-qubit gates. The simulation reproduced a subtle double-peak feature that earlier methods struggled to resolve. The work demonstrates the viability of deep digital Hamiltonian simulation for complex NMR problems.

OutlookPlausible

This could make quantum simulation a practical reference tool for interpreting complex NMR spectra of small-to-medium molecules within two years.

trapped ion algorithms softwareHQS Quantum SimulationsQuantinuum