Method
- Mapper
- PT
- Ansatz
- UCC
- Optimizer
- COBYLA
- Maximum iterations
- 40
- Best energy (Ha)
- -1.72281
H2
H2 VQE accuracy-cost benchmark · hardware · ibm_torino
Final energy-1.7228107787hartree
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
- 2026-03-04T10:53:03+01:00
- Wall time (s)
- 325
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
23 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 | -1.6497280608 | 13.8364 | 1 | — |
| 2 | succeeded | -0.7034602334 | 15.0537 | 1 | — |
| 3 | succeeded | -0.8837063923 | 14.485 | 2 | — |
| 4 | succeeded | -1.2764838802 | 12.0824 | 2 | — |
| 5 | succeeded | -1.7021759203 | 16.1784 | 1 | — |
| 6 | succeeded | -1.5116970465 | 10.9238 | 2 | — |
| 7 | succeeded | -1.6936904260 | 20.1712 | 1 | — |
| 8 | succeeded | -1.6641668685 | 18.4814 | 2 | — |
| 9 | succeeded | -1.6679738285 | 19.5582 | 1 | — |
| 10 | succeeded | -1.6771660853 | 16.1785 | 1 | — |
| 11 | succeeded | -1.6836613494 | 9.1126 | 1 | — |
| 12 | succeeded | -1.6433932643 | 10.0345 | 2 | — |
| 13 | succeeded | -1.6934129342 | 13.3524 | 2 | — |
| 14 | succeeded | -1.7228107787 | 13.412 | 1 | — |
| 15 | succeeded | -1.6419753949 | 16.0785 | 1 | — |
| 16 | succeeded | -1.6693916978 | 14.0312 | 1 | — |
| 17 | succeeded | -1.6768799049 | 9.30999 | 2 | — |
| 18 | succeeded | -1.6336373352 | 12.8013 | 2 | — |
| 19 | succeeded | -1.5858723543 | 10.7514 | 2 | — |
| 20 | succeeded | -1.6921424994 | 12.1849 | 1 | — |
| 21 | succeeded | -1.6750457978 | 10.3424 | 1 | — |
| 22 | succeeded | -1.6935603687 | 21.3168 | 1 | — |
| 23 | succeeded | -1.6675532465 | 17.1696 | 1 | — |