Method
- Mapper
- PT
- Ansatz
- UCC
- Optimizer
- COBYLA
- Maximum iterations
- 40
- Best energy (Ha)
- -1.76464
H2
H2 VQE accuracy-cost benchmark · hardware · ibm_torino
Final energy-1.7646441677hartree
Shots64
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
- 64
- Precision
- 0.125
- Resilience
- 0
- Submitted
- 2026-03-04T10:37:52+01:00
- Wall time (s)
- 286
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
22 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 | -1.6323451788 | 11.0379 | 1 | — |
| 2 | succeeded | -0.8760142745 | 13.4151 | 1 | — |
| 3 | succeeded | -0.6985867494 | 9.72464 | 1 | — |
| 4 | succeeded | -1.1156716541 | 14.7416 | 2 | — |
| 5 | succeeded | -1.6561063006 | 12.4926 | 1 | — |
| 6 | succeeded | -1.7205560896 | 10.6691 | 1 | — |
| 7 | succeeded | -1.4006313428 | 16.1768 | 1 | — |
| 8 | succeeded | -1.6595057115 | 9.62573 | 1 | — |
| 9 | succeeded | -1.5328955772 | 10.954 | 1 | — |
| 10 | succeeded | -1.7533359677 | 13.3168 | 1 | — |
| 11 | succeeded | -1.6900309006 | 11.9791 | 1 | — |
| 12 | succeeded | -1.6041094334 | 9.56494 | 1 | — |
| 13 | succeeded | -1.7646441677 | 17.0119 | 1 | — |
| 14 | succeeded | -1.4820086772 | 13.0791 | 1 | — |
| 15 | succeeded | -1.4989709772 | 17.1969 | 1 | — |
| 16 | succeeded | -1.6481975115 | 17.9865 | 1 | — |
| 17 | succeeded | -1.5543672553 | 14.1342 | 1 | — |
| 18 | succeeded | -1.5600213553 | 10.3401 | 1 | — |
| 19 | succeeded | -1.6459428224 | 14.0288 | 1 | — |
| 20 | succeeded | -1.6900309006 | 15.974 | 1 | — |
| 21 | succeeded | -1.6617604006 | 13.3098 | 1 | — |
| 22 | succeeded | -1.7035937896 | 9.72747 | 1 | — |