Method
- Mapper
- PT
- Ansatz
- UCC
- Optimizer
- COBYLA
- Maximum iterations
- 25
- Best energy (Ha)
- -1.7259
H2
H2 VQE accuracy-cost benchmark · hardware · ibm_torino
Final energy-1.7186221993hartree
Shots1024
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
- 1024
- Precision
- 0.03125
- Resilience
- 0
- Submitted
- 2025-11-20T15:33:33+01:00
- Wall time (s)
- 297
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
17 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 | -1.7252648980 | 6.53306 | 2 | — |
| 2 | succeeded | -0.6616333608 | 6.59721 | 2 | — |
| 3 | succeeded | -0.9492054642 | 6.32138 | 2 | — |
| 4 | succeeded | -1.5699203746 | 84.0567 | 2 | — |
| 5 | succeeded | -1.5238029673 | 6.16322 | 2 | — |
| 6 | succeeded | -1.7192682775 | 6.06118 | 2 | — |
| 7 | succeeded | -1.7128250091 | 6.38863 | 2 | — |
| 8 | succeeded | -1.7133973700 | 87.5021 | 3 | — |
| 9 | succeeded | -1.6989802839 | 6.25279 | 2 | — |
| 10 | succeeded | -1.6866141123 | 6.35388 | 2 | — |
| 11 | succeeded | -1.7058332736 | 6.49448 | 2 | — |
| 12 | succeeded | -1.7259001154 | 6.03632 | 2 | — |
| 13 | succeeded | -1.7162200757 | 6.49463 | 2 | — |
| 14 | succeeded | -1.7074592617 | 6.51298 | 2 | — |
| 15 | succeeded | -1.6871777846 | 6.72656 | 2 | — |
| 16 | succeeded | -1.7153723951 | 33.4177 | 7 | — |
| 17 | succeeded | -1.7186221993 | 8.09956 | 2 | — |