Method
- Mapper
- PT
- Ansatz
- UCC
- Optimizer
- COBYLA
- Maximum iterations
- 40
- Best energy (Ha)
- -1.71465
H2
H2 VQE accuracy-cost benchmark · hardware · ibm_torino
Final energy-1.7146499185hartree
Shots4096
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
- 4096
- Precision
- 0.015625
- Resilience
- 0
- Submitted
- 2026-03-06T23:59:52+01:00
- Wall time (s)
- 617
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 | -1.6900568643 | 9.3037 | 3 | — |
| 2 | succeeded | -0.7004413217 | 8.29429 | 3 | — |
| 3 | succeeded | -0.9429703487 | 23.1406 | 3 | — |
| 4 | succeeded | -1.2635773530 | 10.6479 | 3 | — |
| 5 | succeeded | -1.6826055500 | 8.77117 | 3 | — |
| 6 | succeeded | -1.6364740918 | 9.27886 | 3 | — |
| 7 | succeeded | -1.7052045727 | 10.1026 | 3 | — |
| 8 | succeeded | -1.6969814331 | 9.02927 | 3 | — |
| 9 | succeeded | -1.7104294020 | 9.55516 | 3 | — |
| 10 | succeeded | -1.6793318520 | 9.82545 | 3 | — |
| 11 | succeeded | -1.6994810997 | 9.4509 | 3 | — |
| 12 | succeeded | -1.7072115690 | 9.13138 | 3 | — |
| 13 | succeeded | -1.6974106698 | 199.982 | 3 | — |
| 14 | succeeded | -1.6995282421 | 9.07852 | 3 | — |
| 15 | succeeded | -1.7061194540 | 10.1285 | 3 | — |
| 16 | succeeded | -1.6834353102 | 9.77619 | 3 | — |
| 17 | succeeded | -1.6955023024 | 8.67804 | 3 | — |
| 18 | succeeded | -1.7073541162 | 9.2087 | 3 | — |
| 19 | succeeded | -1.7146499185 | 9.36044 | 3 | — |
| 20 | succeeded | -1.6929587177 | 193.027 | 3 | — |
| 21 | succeeded | -1.6823773386 | 11.8762 | 3 | — |
| 22 | succeeded | -1.7040885979 | 9.88103 | 3 | — |
| 23 | succeeded | -1.6868824065 | 9.53316 | 3 | — |
| 24 | succeeded | -1.7055904682 | 8.57739 | 3 | — |