Method
- Mapper
- PT
- Ansatz
- UCC
- Optimizer
- COBYLA
- Maximum iterations
- 25
- Best energy (Ha)
- -1.7047
H2
H2 VQE accuracy-cost benchmark · hardware · ibm_torino
Final energy-1.6346085565hartree
Shots256
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
- 256
- Precision
- 0.0625
- Resilience
- 0
- Submitted
- 2025-11-10T16:59:12+01:00
- Wall time (s)
- 139
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
19 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 | -1.6699293042 | 6.35312 | 2 | — |
| 2 | succeeded | -0.6637514761 | 5.7356 | 1 | — |
| 3 | succeeded | -0.9820634039 | 5.7412 | 1 | — |
| 4 | succeeded | -1.4588459823 | 6.06404 | 1 | — |
| 5 | succeeded | -1.5633686343 | 10.8676 | 2 | — |
| 6 | succeeded | -1.6662697787 | 6.06885 | 1 | — |
| 7 | succeeded | -1.6809600124 | 5.78621 | 2 | — |
| 8 | succeeded | -1.6764332569 | 6.49016 | 2 | — |
| 9 | succeeded | -1.5811807870 | 6.71713 | 2 | — |
| 10 | succeeded | -1.7047037569 | 6.02085 | 2 | — |
| 11 | succeeded | -1.6724788624 | 5.80706 | 1 | — |
| 12 | succeeded | -1.6919820319 | 9.23304 | 2 | — |
| 13 | succeeded | -1.6620205151 | 6.1598 | 2 | — |
| 14 | succeeded | -1.6651250569 | 6.2579 | 1 | — |
| 15 | succeeded | -1.6362995733 | 5.80305 | 2 | — |
| 16 | succeeded | -1.6662610901 | 14.8086 | 2 | — |
| 17 | succeeded | -1.6577799401 | 6.89018 | 2 | — |
| 18 | succeeded | -1.6196234538 | 11.1705 | 1 | — |
| 19 | succeeded | -1.6346085565 | 5.75819 | 1 | — |