Method
- Mapper
- PT
- Ansatz
- UCC
- Optimizer
- COBYLA
- Maximum iterations
- 40
- Best energy (Ha)
- -1.92743
H2
H2 VQE accuracy-cost benchmark · hardware · ibm_torino
Final energy-1.9274335911hartree
Shots16
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
- 16
- Precision
- 0.25
- Resilience
- 0
- Submitted
- 2026-03-06T23:27:53+01:00
- Wall time (s)
- 123
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
14 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 | -1.9274335911 | 8.8233 | 1 | — |
| 2 | succeeded | -0.9958603416 | 15.4549 | 2 | — |
| 3 | succeeded | -0.6115205604 | 8.19245 | 1 | — |
| 4 | succeeded | -1.1812314103 | 7.54789 | 1 | — |
| 5 | succeeded | -1.8279492349 | 8.00324 | 1 | — |
| 6 | succeeded | -1.4480493227 | 7.92839 | 1 | — |
| 7 | succeeded | -1.7284648787 | 7.7949 | 1 | — |
| 8 | succeeded | -1.7148672350 | 8.9126 | 1 | — |
| 9 | succeeded | -1.9048171911 | 8.39001 | 1 | — |
| 10 | succeeded | -1.7374836350 | 8.57826 | 1 | — |
| 11 | succeeded | -1.5158985226 | 8.75583 | 1 | — |
| 12 | succeeded | -1.9274335911 | 8.20958 | 1 | — |
| 13 | succeeded | -1.7601000350 | 8.3949 | 1 | — |
| 14 | succeeded | -1.8279492349 | 7.83411 | 1 | — |