Method
- Mapper
- PT
- Ansatz
- UCC
- Optimizer
- COBYLA
- Maximum iterations
- 30
- Best energy (Ha)
- -1.67355
H2
H2 VQE accuracy-cost benchmark · hardware · ibm_torino
Final energy-1.6305956498hartree
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
- 2025-10-01T12:32:05+02:00
- Wall time (s)
- 146
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 | -1.6608237976 | 6.5815 | 2 | — |
| 2 | succeeded | -0.6605038441 | 6.0488 | 2 | — |
| 3 | succeeded | -0.9034176806 | 5.9765 | 2 | — |
| 4 | succeeded | -1.4749562574 | 6.84821 | 2 | — |
| 5 | succeeded | -1.4943379220 | 6.2618 | 2 | — |
| 6 | succeeded | -1.6713580343 | 5.64087 | 2 | — |
| 7 | succeeded | -1.6349099421 | 5.90818 | 2 | — |
| 8 | succeeded | -1.6735542112 | 6.06964 | 2 | — |
| 9 | succeeded | -1.6180235316 | 6.19555 | 2 | — |
| 10 | succeeded | -1.6379472831 | 6.40639 | 2 | — |
| 11 | succeeded | -1.6453617729 | 5.9395 | 2 | — |
| 12 | succeeded | -1.6366703319 | 6.41666 | 2 | — |
| 13 | succeeded | -1.6349055978 | 6.08637 | 2 | — |
| 14 | succeeded | -1.6577301166 | 33.1516 | 2 | — |
| 15 | succeeded | -1.6139889033 | 5.51768 | 2 | — |
| 16 | succeeded | -1.6437401290 | 6.70095 | 3 | — |
| 17 | succeeded | -1.6616866833 | 5.97598 | 2 | — |
| 18 | succeeded | -1.6654307868 | 6.41726 | 2 | — |
| 19 | succeeded | -1.6305956498 | 6.22234 | 2 | — |