Method
- Mapper
- PT
- Ansatz
- UCC
- Optimizer
- COBYLA
- Maximum iterations
- 30
- Best energy (Ha)
- -1.84397
H2
H2 VQE accuracy-cost benchmark · hardware · ibm_kingston
Final energy-1.8202246709hartree
Shots1024
Runtime executionsingle-job
Resilience0
MappingPT
Active space2e,2o
Execution
- Mode
- hardware
- Provider
- IBM Quantum
- Compute resource
- ibm_kingston
- Resource type
- ibm quantum hardware
- Processor family
- Heron r2
- Processor model
- —
- Processor revision
- —
- Qubits
- —
- Connectivity
- —
- Runtime execution
- single-job
- Shots
- 1024
- Precision
- 0.03125
- Resilience
- 0
- Submitted
- 2025-12-17T13:53:02+01:00
- Wall time (s)
- 441
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
20 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 | -1.8265855334 | 25.2019 | 5 | — |
| 2 | succeeded | -0.5862330974 | 173.518 | 2 | — |
| 3 | succeeded | -0.8637197842 | 10.648 | 2 | — |
| 4 | succeeded | -1.5902061961 | 39.1904 | 5 | — |
| 5 | succeeded | -1.6378322948 | 7.6538 | 2 | — |
| 6 | succeeded | -1.8251091519 | 7.5065 | 2 | — |
| 7 | succeeded | -1.7957004466 | 6.96496 | 2 | — |
| 8 | succeeded | -1.8365474092 | 7.74939 | 2 | — |
| 9 | succeeded | -1.8287058209 | 7.34003 | 2 | — |
| 10 | succeeded | -1.8312488626 | 7.91729 | 2 | — |
| 11 | succeeded | -1.8134410542 | 7.79136 | 2 | — |
| 12 | succeeded | -1.8385267786 | 46.3718 | 12 | — |
| 13 | succeeded | -1.8302602639 | 8.43863 | 3 | — |
| 14 | succeeded | -1.8354894376 | 7.52635 | 2 | — |
| 15 | succeeded | -1.8386676967 | 6.82388 | 2 | — |
| 16 | succeeded | -1.8301887188 | 40.041 | 5 | — |
| 17 | succeeded | -1.8123093653 | 7.53733 | 2 | — |
| 18 | succeeded | -1.8417765828 | 7.39739 | 2 | — |
| 19 | succeeded | -1.8439684154 | 7.37785 | 2 | — |
| 20 | succeeded | -1.8202246709 | 7.82244 | 2 | — |