Method
- Mapper
- PT
- Ansatz
- UCC
- Optimizer
- COBYLA
- Maximum iterations
- 25
- Best energy (Ha)
- -1.72873
H2
H2 VQE accuracy-cost benchmark · hardware · ibm_torino
Final energy-1.7114917179hartree
Shots1024
Runtime executionsession
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
- session
- Shots
- 1024
- Precision
- 0.03125
- Resilience
- 0
- Submitted
- 2025-11-20T16:27:43+01:00
- Wall time (s)
- 164
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 | -1.6751649943 | 89.8486 | 1 | — |
| 2 | succeeded | -0.7025431798 | 6.08411 | 1 | — |
| 3 | succeeded | -0.9431286100 | 6.79459 | 1 | — |
| 4 | succeeded | -1.5326874583 | 8.08228 | 1 | — |
| 5 | succeeded | -1.5262744639 | 7.45944 | 2 | — |
| 6 | succeeded | -1.7052045727 | 6.81143 | 1 | — |
| 7 | succeeded | -1.7013282397 | 8.37735 | 1 | — |
| 8 | succeeded | -1.6815410619 | 7.95377 | 1 | — |
| 9 | succeeded | -1.7113507998 | 8.05164 | 1 | — |
| 10 | succeeded | -1.6942497539 | 6.31646 | 1 | — |
| 11 | succeeded | -1.7172130187 | 8.9869 | 1 | — |
| 12 | succeeded | -1.7059069908 | 6.91258 | 1 | — |
| 13 | succeeded | -1.7239250902 | 6.90925 | 1 | — |
| 14 | succeeded | -1.7220172659 | 6.19814 | 1 | — |
| 15 | succeeded | -1.7249180332 | 6.2802 | 1 | — |
| 16 | succeeded | -1.7287336818 | 6.60001 | 1 | — |
| 17 | succeeded | -1.7090895943 | 6.55244 | 1 | — |
| 18 | succeeded | -1.7086668401 | 6.70415 | 1 | — |
| 19 | succeeded | -1.6869024650 | 6.25676 | 1 | — |
| 20 | succeeded | -1.7276757103 | 6.382 | 1 | — |
| 21 | succeeded | -1.6832971074 | 6.53321 | 1 | — |
| 22 | succeeded | -1.7191230151 | 6.47444 | 1 | — |
| 23 | succeeded | -1.7114917179 | 6.1804 | 1 | — |