Method
- Mapper
- PT
- Ansatz
- UCC
- Optimizer
- COBYLA
- Maximum iterations
- 40
- Best energy (Ha)
- -1.81664
H2
H2 VQE accuracy-cost benchmark · hardware · ibm_torino
Final energy-1.8166410349hartree
Shots32
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
- 32
- Precision
- 0.176777
- Resilience
- 0
- Submitted
- 2026-03-04T10:32:21+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 | -1.5882571007 | 11.5684 | 1 | — |
| 2 | succeeded | -0.9053947417 | 10.9567 | 1 | — |
| 3 | succeeded | -0.9280806508 | 18.6349 | 1 | — |
| 4 | succeeded | -1.1269798541 | 19.4857 | 1 | — |
| 5 | succeeded | -1.6945402787 | 15.7244 | 1 | — |
| 6 | succeeded | -1.4752446100 | 12.9466 | 1 | — |
| 7 | succeeded | -1.6832320787 | 13.0001 | 1 | — |
| 8 | succeeded | -1.4300118100 | 22.8347 | 1 | — |
| 9 | succeeded | -1.8053328349 | 11.0432 | 1 | — |
| 10 | succeeded | -1.4277223664 | 13.7656 | 1 | — |
| 11 | succeeded | -1.5294961663 | 14.8439 | 1 | — |
| 12 | succeeded | -1.6334899006 | 12.6206 | 1 | — |
| 13 | succeeded | -1.6266910788 | 11.1633 | 1 | — |
| 14 | succeeded | -1.5905465443 | 19.8645 | 2 | — |
| 15 | succeeded | -1.8166410349 | 12.1134 | 1 | — |
| 16 | succeeded | -1.7329742568 | 9.72796 | 1 | — |
| 17 | succeeded | -1.7668988568 | 13.8223 | 1 | — |
| 18 | succeeded | -1.7555906568 | 17.0127 | 1 | — |
| 19 | succeeded | -1.6945402787 | 11.3662 | 1 | — |
| 20 | succeeded | -1.7827164349 | 14.88 | 1 | — |
| 21 | succeeded | -1.8166410349 | 11.8779 | 1 | — |
| 22 | succeeded | -1.6832320787 | 11.6741 | 1 | — |
| 23 | succeeded | -1.6063641225 | 15.2443 | 1 | — |