Method
- Mapper
- PT
- Ansatz
- UCC
- Optimizer
- COBYLA
- Maximum iterations
- 30
- Best energy (Ha)
- -1.71912
H2
H2 VQE accuracy-cost benchmark · hardware · ibm_torino
Final energy-1.7191164987hartree
Shots512
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
- 512
- Precision
- 0.0441942
- Resilience
- 0
- Submitted
- 2026-03-03T23:13:28+01:00
- Wall time (s)
- 196
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
19 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 | -1.7191164987 | 10.5111 | 2 | — |
| 2 | succeeded | -0.6742098234 | 9.51294 | 2 | — |
| 3 | succeeded | -0.8982578800 | 9.72763 | 2 | — |
| 4 | succeeded | -1.2632028273 | 9.94552 | 2 | — |
| 5 | succeeded | -1.6599262935 | 10.6061 | 1 | — |
| 6 | succeeded | -1.5821693857 | 12.4764 | 1 | — |
| 7 | succeeded | -1.6771530524 | 9.14357 | 1 | — |
| 8 | succeeded | -1.6428035260 | 12.1472 | 1 | — |
| 9 | succeeded | -1.6723444608 | 12.2866 | 1 | — |
| 10 | succeeded | -1.6868959485 | 10.3388 | 1 | — |
| 11 | succeeded | -1.6980567139 | 9.62401 | 1 | — |
| 12 | succeeded | -1.6723401165 | 11.9762 | 1 | — |
| 13 | succeeded | -1.6854824235 | 9.52071 | 2 | — |
| 14 | succeeded | -1.6699379928 | 9.72942 | 1 | — |
| 15 | succeeded | -1.6637158762 | 8.90852 | 1 | — |
| 16 | succeeded | -1.6723401165 | 9.64815 | 1 | — |
| 17 | succeeded | -1.6832190458 | 9.93167 | 1 | — |
| 18 | succeeded | -1.6625885317 | 9.4189 | 1 | — |
| 19 | succeeded | -1.6511415858 | 12.0821 | 1 | — |