Method
- Mapper
- PT
- Ansatz
- UCC
- Optimizer
- COBYLA
- Maximum iterations
- 40
- Best energy (Ha)
- -1.73488
H2
H2 VQE accuracy-cost benchmark · hardware · ibm_torino
Final energy-1.7348842533hartree
Shots1024
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
- 1024
- Precision
- 0.03125
- Resilience
- 0
- Submitted
- 2026-03-06T23:53:51+01:00
- Wall time (s)
- 171
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
21 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 | -1.6773568269 | 8.30932 | 2 | — |
| 2 | succeeded | -0.7113777111 | 8.27385 | 2 | — |
| 3 | succeeded | -0.9253229738 | 8.4969 | 2 | — |
| 4 | succeeded | -1.2966244393 | 7.47659 | 2 | — |
| 5 | succeeded | -1.6858553542 | 8.36425 | 2 | — |
| 6 | succeeded | -1.6249567550 | 7.78155 | 2 | — |
| 7 | succeeded | -1.7191967324 | 7.57679 | 2 | — |
| 8 | succeeded | -1.6876070553 | 7.75612 | 2 | — |
| 9 | succeeded | -1.6972285828 | 7.08687 | 2 | — |
| 10 | succeeded | -1.7027330761 | 8.05825 | 2 | — |
| 11 | succeeded | -1.7109323899 | 7.9583 | 2 | — |
| 12 | succeeded | -1.6958085413 | 7.78158 | 2 | — |
| 13 | succeeded | -1.6853545384 | 8.33881 | 2 | — |
| 14 | succeeded | -1.7115654352 | 8.16007 | 2 | — |
| 15 | succeeded | -1.7348842533 | 8.37526 | 2 | — |
| 16 | succeeded | -1.6913576753 | 8.49936 | 2 | — |
| 17 | succeeded | -1.6957391684 | 8.30269 | 2 | — |
| 18 | succeeded | -1.7194113678 | 7.48991 | 2 | — |
| 19 | succeeded | -1.7310686047 | 8.1913 | 2 | — |
| 20 | succeeded | -1.7199728679 | 8.29583 | 2 | — |
| 21 | succeeded | -1.6774370607 | 8.70164 | 2 | — |