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qubithublih-excited-states

Finds ground and first excited states of lithium hydride (LiH) using VQD on a 4-qubit active-space Hamiltonian. LiH has richer electronic structure than H2, including ionic-covalent character mixing and an avoided crossing at stretched geometries (~3 A).

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Framework
Qiskit
Qubits
4
Depth
20
Gate set
RY, RZ, CX
Licence
Not specified
Version
v1
Updated
3 days ago
Last run
3 months ago

Circuit

circuit.py · Qiskit · depth 20
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qubithub.toml · 331 B

Code

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Suggested citation

@software{qubithub_lihexcitedstates_2026,
  author = {QubitHub Circuits},
  title = {LiH Excited States},
  year = {2026},
  version = {v1},
  url = {https://qubithub.co/qubithub/lih-excited-states},
}

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