Method
- Mapper
- PT
- Ansatz
- UCC
- Optimizer
- COBYLA
- Maximum iterations
- 30
- Best energy (Ha)
- -1.72251
H2
H2 VQE accuracy-cost benchmark · hardware · ibm_torino
Final energy-1.7225072209hartree
Shots256
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
- 256
- Precision
- 0.0625
- Resilience
- 0
- Submitted
- 2026-03-03T23:09:26+01:00
- Wall time (s)
- 237
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
22 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 | -1.6962226069 | 10.6914 | 1 | — |
| 2 | succeeded | -0.7154708515 | 11.6727 | 1 | — |
| 3 | succeeded | -0.8935923786 | 11.6477 | 1 | — |
| 4 | succeeded | -1.2145923380 | 10.1375 | 1 | — |
| 5 | succeeded | -1.6470614783 | 10.3565 | 1 | — |
| 6 | succeeded | -1.6266910788 | 10.6236 | 1 | — |
| 7 | succeeded | -1.6600520065 | 12.7745 | 1 | — |
| 8 | succeeded | -1.6136831734 | 9.39233 | 1 | — |
| 9 | succeeded | -1.6467666092 | 9.83037 | 1 | — |
| 10 | succeeded | -1.7021541987 | 10.4452 | 1 | — |
| 11 | succeeded | -1.6981998041 | 10.343 | 1 | — |
| 12 | succeeded | -1.7225072209 | 10.8521 | 1 | — |
| 13 | succeeded | -1.6772831096 | 11.7169 | 1 | — |
| 14 | succeeded | -1.6289544565 | 11.4077 | 1 | — |
| 15 | succeeded | -1.7015905264 | 9.93137 | 1 | — |
| 16 | succeeded | -1.6422398538 | 9.52123 | 1 | — |
| 17 | succeeded | -1.6654112374 | 11.777 | 1 | — |
| 18 | succeeded | -1.6388491315 | 11.7686 | 1 | — |
| 19 | succeeded | -1.7162894487 | 10.6485 | 1 | — |
| 20 | succeeded | -1.6826597178 | 10.8065 | 1 | — |
| 21 | succeeded | -1.6136918620 | 11.4751 | 1 | — |
| 22 | succeeded | -1.5670542257 | 9.90708 | 1 | — |