Method
- Mapper
- PT
- Ansatz
- UCC
- Optimizer
- COBYLA
- Maximum iterations
- 40
- Best energy (Ha)
- -1.77536
H2
H2 VQE accuracy-cost benchmark · hardware · ibm_torino
Final energy-1.7753626295hartree
Shots128
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
- 128
- Precision
- 0.0883883
- Resilience
- 0
- Submitted
- 2026-03-06T23:44:31+01:00
- Wall time (s)
- 225
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
27 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 | -1.6804050287 | 12.6227 | 1 | — |
| 2 | succeeded | -0.6747734957 | 8.84437 | 1 | — |
| 3 | succeeded | -0.9472976399 | 8.23929 | 1 | — |
| 4 | succeeded | -1.3383841110 | 7.99645 | 1 | — |
| 5 | succeeded | -1.5611486998 | 7.91885 | 1 | — |
| 6 | succeeded | -1.6662524015 | 7.42782 | 1 | — |
| 7 | succeeded | -1.7499365568 | 7.70571 | 1 | — |
| 8 | succeeded | -1.6843768006 | 7.57936 | 1 | — |
| 9 | succeeded | -1.6809600124 | 8.28626 | 1 | — |
| 10 | succeeded | -1.6781503397 | 9.67688 | 1 | — |
| 11 | succeeded | -1.7075308069 | 8.39502 | 1 | — |
| 12 | succeeded | -1.6023923507 | 7.6472 | 1 | — |
| 13 | succeeded | -1.6962226069 | 8.23447 | 1 | — |
| 14 | succeeded | -1.7465371459 | 7.61866 | 1 | — |
| 15 | succeeded | -1.7544459350 | 7.74431 | 1 | — |
| 16 | succeeded | -1.7414554068 | 7.99486 | 1 | — |
| 17 | succeeded | -1.6747509287 | 7.98334 | 1 | — |
| 18 | succeeded | -1.6527068897 | 8.37483 | 1 | — |
| 19 | succeeded | -1.7103578569 | 7.67936 | 1 | — |
| 20 | succeeded | -1.7194113678 | 7.86925 | 1 | — |
| 21 | succeeded | -1.6967949678 | 7.84555 | 1 | — |
| 22 | succeeded | -1.6707965342 | 8.27929 | 1 | — |
| 23 | succeeded | -1.6510071842 | 7.76623 | 1 | — |
| 24 | succeeded | -1.7064034623 | 9.27736 | 1 | — |
| 25 | succeeded | -1.7753626295 | 8.32807 | 1 | — |
| 26 | succeeded | -1.7250654678 | 8.53679 | 1 | — |
| 27 | succeeded | -1.7273201568 | 7.77431 | 1 | — |