Method
- Mapper
- PT
- Ansatz
- UCC
- Optimizer
- COBYLA
- Maximum iterations
- 40
- Best energy (Ha)
- -2.0179
H2
H2 VQE accuracy-cost benchmark · hardware · ibm_torino
Final energy-2.0178991910hartree
Shots1
Runtime executionsingle-job
Resilience0
MappingPT
Active space2e,2o
Execution
- Mode
- hardware
- Provider
- IBM Quantum
- Compute resource
- ibm_torino
- Resource type
- ibm quantum hardware
- Processor family
- Heron r1
- Processor model
- —
- Processor revision
- —
- Qubits
- —
- Connectivity
- —
- Runtime execution
- single-job
- Shots
- 1
- Precision
- 1
- Resilience
- 0
- Submitted
- 2026-03-04T10:18:14+01:00
- Wall time (s)
- 92
Molecular system
- Charge
- 0
- Multiplicity
- 1
- Basis
- STO-3G
- Active space
- 2e,2o
- Active electrons
- 2
- Spatial orbitals
- 2
- Geometry units
- angstrom
Circuit
- Logical qubits
- 1
- Physical qubits
- —
- Parameters
- —
- Depth
- 1
- Two-qubit gates
- 0
- Hamiltonian terms
- —
Dataset publication
Associated articles
- Accuracy-Cost Trade-offs for Reference VQE Calculations of H2 on IBM Quantum Hardware submitted to Quantum Science and Technology
- Accuracy-Cost Trade-offs for Reference VQE Calculations of H2 on IBM Quantum Hardware DOI 10.48550/arXiv.2604.11478 arXiv 2604.11478 published preprint
Compute access
- Fraunhofer Quantum Now and EQeS · IBM Quantum · allocation: Fraunhofer Quantum Now
Optimization trajectory
9 recorded objective evaluations. Charts use cumulative time so convergence cost remains comparable across calculations.
| Attempt | Outcome | Energy (Ha) | Elapsed (s) | Quantum (s) | Parameters |
|---|---|---|---|---|---|
| 1 | succeeded | -1.6560367914 | 10.3507 | 1 | — |
| 2 | succeeded | -0.0642870920 | 8.60145 | 1 | — |
| 3 | succeeded | -0.4261494916 | 9.94273 | 1 | — |
| 4 | succeeded | -0.0642870920 | 9.55361 | 1 | — |
| 5 | succeeded | -2.0178991910 | 11.4675 | 1 | — |
| 6 | succeeded | -0.0642870920 | 12.4224 | 1 | — |
| 7 | succeeded | -1.6560367914 | 11.0591 | 2 | — |
| 8 | succeeded | -2.0178991910 | 9.62932 | 1 | — |
| 9 | succeeded | -2.0178991910 | 10.7506 | 1 | — |