Method
- Mapper
- PT
- Ansatz
- UCC
- Optimizer
- COBYLA
- Maximum iterations
- 30
- Best energy (Ha)
- -1.72047
H2
H2 VQE accuracy-cost benchmark · hardware · ibm_torino
Final energy-1.7110711358hartree
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
- 2025-10-01T13:30:40+02:00
- Wall time (s)
- 121
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 | -1.6563729316 | 6.75642 | 2 | — |
| 2 | succeeded | -0.6732905977 | 5.77828 | 2 | — |
| 3 | succeeded | -0.9667964651 | 6.01098 | 2 | — |
| 4 | succeeded | -1.5032224130 | 7.95549 | 2 | — |
| 5 | succeeded | -1.4949709673 | 6.21351 | 2 | — |
| 6 | succeeded | -1.7005412435 | 5.97516 | 2 | — |
| 7 | succeeded | -1.6963137014 | 6.05303 | 2 | — |
| 8 | succeeded | -1.6774435772 | 5.78991 | 2 | — |
| 9 | succeeded | -1.6933327004 | 6.05636 | 2 | — |
| 10 | succeeded | -1.6775779787 | 6.36083 | 2 | — |
| 11 | succeeded | -1.6765872079 | 6.66405 | 2 | — |
| 12 | succeeded | -1.6766609252 | 6.78096 | 2 | — |
| 13 | succeeded | -1.7029455393 | 6.06268 | 2 | — |
| 14 | succeeded | -1.6839366691 | 6.4312 | 2 | — |
| 15 | succeeded | -1.6933348726 | 6.06287 | 2 | — |
| 16 | succeeded | -1.6879669530 | 5.96029 | 2 | — |
| 17 | succeeded | -1.6875398545 | 6.3618 | 2 | — |
| 18 | succeeded | -1.7204693394 | 6.1252 | 2 | — |
| 19 | succeeded | -1.7110711358 | 6.72671 | 2 | — |