Method
- Mapper
- PT
- Ansatz
- UCC
- Optimizer
- COBYLA
- Maximum iterations
- 30
- Best energy (Ha)
- -1.71376
H2
H2 VQE accuracy-cost benchmark · hardware · ibm_torino
Final energy-1.7137550956hartree
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
- 2026-03-03T23:16:49+01:00
- Wall time (s)
- 242
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
24 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 | -1.6613159248 | 12.3834 | 2 | — |
| 2 | succeeded | -0.6347113572 | 11.7758 | 2 | — |
| 3 | succeeded | -0.8880857132 | 11.648 | 2 | — |
| 4 | succeeded | -1.2730259571 | 10.8536 | 2 | — |
| 5 | succeeded | -1.6486874665 | 14.4803 | 2 | — |
| 6 | succeeded | -1.6362952290 | 9.2461 | 2 | — |
| 7 | succeeded | -1.6964415865 | 10.4446 | 2 | — |
| 8 | succeeded | -1.6611273554 | 9.55626 | 2 | — |
| 9 | succeeded | -1.6961510618 | 8.83171 | 2 | — |
| 10 | succeeded | -1.7128380421 | 9.34554 | 2 | — |
| 11 | succeeded | -1.6481931672 | 9.4199 | 2 | — |
| 12 | succeeded | -1.6905078226 | 10.0743 | 2 | — |
| 13 | succeeded | -1.6895972855 | 10.4107 | 2 | — |
| 14 | succeeded | -1.7050679989 | 9.12144 | 2 | — |
| 15 | succeeded | -1.6818900988 | 11.5026 | 2 | — |
| 16 | succeeded | -1.6811139634 | 8.26494 | 2 | — |
| 17 | succeeded | -1.7048533636 | 8.70558 | 2 | — |
| 18 | succeeded | -1.6476229784 | 9.21589 | 2 | — |
| 19 | succeeded | -1.7137550956 | 9.44658 | 2 | — |
| 20 | succeeded | -1.7089551927 | 8.90855 | 2 | — |
| 21 | succeeded | -1.6777926141 | 9.62504 | 2 | — |
| 22 | succeeded | -1.6976469927 | 8.59949 | 2 | — |
| 23 | succeeded | -1.6905793677 | 9.62357 | 2 | — |
| 24 | succeeded | -1.6798413565 | 12.2873 | 2 | — |