Method
- Mapper
- PF
- Ansatz
- UCC
- Optimizer
- COBYLA
- Maximum iterations
- 30
- Best energy (Ha)
- -1.77368
H2
H2 VQE accuracy-cost benchmark · hardware · ibm_aachen
Final energy-1.7501559884hartree
Shots1024
Runtime executionsession
Resilience0
MappingPF
Active space2e,2o
Execution
- Mode
- hardware
- Provider
- IBM Quantum
- Compute resource
- ibm_aachen
- Resource type
- ibm quantum hardware
- Processor family
- Heron r2
- Processor model
- —
- Processor revision
- —
- Qubits
- —
- Connectivity
- —
- Runtime execution
- session
- Shots
- 1024
- Precision
- 0.03125
- Resilience
- 0
- Submitted
- 2025-11-24T13:54:28+01:00
- Wall time (s)
- 114
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
- 2
- Physical qubits
- —
- Parameters
- —
- Depth
- 17
- Two-qubit gates
- 4
- 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
18 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 | -1.7259842877 | 9.13339 | 2 | — |
| 2 | succeeded | -0.6681974904 | 6.55773 | 2 | — |
| 3 | succeeded | -0.9263001635 | 6.70394 | 2 | — |
| 4 | succeeded | -1.5635489812 | 5.96147 | 2 | — |
| 5 | succeeded | -1.6011193584 | 5.94333 | 2 | — |
| 6 | succeeded | -1.7694994870 | 6.01435 | 2 | — |
| 7 | succeeded | -1.7090140347 | 5.96211 | 2 | — |
| 8 | succeeded | -1.7502528232 | 6.15568 | 2 | — |
| 9 | succeeded | -1.7484423110 | 6.81977 | 2 | — |
| 10 | succeeded | -1.7556735350 | 5.65901 | 2 | — |
| 11 | succeeded | -1.7557420300 | 6.27024 | 2 | — |
| 12 | succeeded | -1.7447287398 | 6.00465 | 2 | — |
| 13 | succeeded | -1.7495914382 | 6.3896 | 2 | — |
| 14 | succeeded | -1.7593329994 | 7.05586 | 3 | — |
| 15 | succeeded | -1.7518910478 | 6.26703 | 2 | — |
| 16 | succeeded | -1.7681697232 | 5.9001 | 2 | — |
| 17 | succeeded | -1.7736794387 | 6.93697 | 2 | — |
| 18 | succeeded | -1.7501559884 | 5.92812 | 2 | — |