Method
- Mapper
- PT
- Ansatz
- UCC
- Optimizer
- COBYLA
- Maximum iterations
- 30
- Best energy (Ha)
- -1.70234
H2
H2 VQE accuracy-cost benchmark · hardware · ibm_torino
Final energy-1.7023406640hartree
Shots4096
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
- 4096
- Precision
- 0.015625
- Resilience
- 0
- Submitted
- 2026-03-03T23:24:46+01:00
- Wall time (s)
- 299
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
25 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 | -1.6827263756 | 12.14 | 3 | — |
| 2 | succeeded | -0.6602371790 | 9.6249 | 3 | — |
| 3 | succeeded | -0.9387292307 | 12.3891 | 3 | — |
| 4 | succeeded | -1.2720205583 | 9.93207 | 3 | — |
| 5 | succeeded | -1.6672546102 | 9.88605 | 3 | — |
| 6 | succeeded | -1.6226071360 | 11.8351 | 3 | — |
| 7 | succeeded | -1.6833345090 | 9.86844 | 3 | — |
| 8 | succeeded | -1.6884482534 | 9.94488 | 3 | — |
| 9 | succeeded | -1.5955464546 | 10.4979 | 3 | — |
| 10 | succeeded | -1.6926443672 | 22.3994 | 3 | — |
| 11 | succeeded | -1.6822152760 | 10.7008 | 3 | — |
| 12 | succeeded | -1.6887799471 | 10.0241 | 3 | — |
| 13 | succeeded | -1.6935614208 | 12.2889 | 3 | — |
| 14 | succeeded | -1.6848347502 | 11.1607 | 3 | — |
| 15 | succeeded | -1.7023406640 | 13.5157 | 3 | — |
| 16 | succeeded | -1.7003103510 | 11.879 | 3 | — |
| 17 | succeeded | -1.6948334846 | 10.9564 | 3 | — |
| 18 | succeeded | -1.6953283270 | 10.444 | 3 | — |
| 19 | succeeded | -1.6948524570 | 10.675 | 3 | — |
| 20 | succeeded | -1.6885989122 | 10.765 | 3 | — |
| 21 | succeeded | -1.6851003292 | 10.9332 | 3 | — |
| 22 | succeeded | -1.6896411697 | 11.8773 | 3 | — |
| 23 | succeeded | -1.7018826803 | 16.2806 | 3 | — |
| 24 | succeeded | -1.6928216009 | 13.3157 | 3 | — |
| 25 | succeeded | -1.6913901896 | 15.3814 | 3 | — |