H2O Water Molecule Simulation Benchmark

Benchmark for quantum simulation of the water molecule (H2O), computing ground-state energies and potential energy surfaces using VQE. As a triatomic molecule with a non-trivial electronic structure, H2O serves as a step up in complexity from diatomic benchmarks like H2 and LiH. VQE implementations can approximate the ground-state energy with high chemical accuracy on both simulators and NISQ hardware.[1]

  • Algorithm: Variational Quantum Eigensolver (VQE)
  • Category: chemistry
  • Qubits: 14
  • Framework: Qiskit Nature, PennyLane
  • Hardware: Various (IBM Quantum, simulators)
  • Reproducible: Yes
  • Published:
  • VQE
  • water
  • chemistry
  • ground-state
  • potential-energy-surface

What algorithm does H2O Water Molecule Simulation Benchmark use?

H2O Water Molecule Simulation Benchmark uses the Variational Quantum Eigensolver (VQE) algorithm, categorized under chemistry.

Frequently Asked Questions

What is the H2O Water Molecule Simulation Benchmark benchmark?

Benchmark for quantum simulation of the water molecule (H2O), computing ground-state energies and potential energy surfaces using VQE. As a triatomic molecule with a non-trivial electronic structure, H2O serves as a step up in complexity from diatomic benchmarks like H2 and LiH. VQE implementations can approximate the ground-state energy with high chemical accuracy on both simulators and NISQ hardware.

Is H2O Water Molecule Simulation Benchmark reproducible?

Yes, this benchmark is reproducible.

Sources

  1. "Benchmarking the Variational Quantum Eigensolver through Simulation of the Ground State Energy of Prebiotic Molecules", accessed 2026-03-19 — arXiv
  2. "Investigating potential energy surfaces of noncollinear molecule using variational quantum circuit", accessed 2026-03-19 — arXiv