qubithubmultistate-vqe

Multi-reference approach for finding multiple eigenstates simultaneously by building a contracted Hamiltonian in a subspace of reference states with optimized Givens orbital rotations. Applied to the 4-qubit Transverse Field Ising Model.

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Framework: Qiskit
Qubits: 4
Depth: 22
Gate set: RY, RZ, CX
Licence: Not specified
Version: v1
Updated: 3 days ago
Last run: 3 months ago

Circuit

circuit.py · Qiskit · depth 22

5 of 6 runs

Status	Backend	Shots	Wall time
Completed	Simulator aer_simulator	1024	14.6 s
Completed	Simulator qiskit_aer	1024	14.8 s
Completed	Simulator qiskit_aer	1024	5.2 s
Completed	Simulator qiskit_aer	1024	5.2 s
Completed	Simulator qiskit_aer	1024	5.7 s

All 6 runs

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Suggested citation

@software{qubithub_multistatevqe_2026,
  author = {QubitHub Circuits},
  title = {Multistate VQE},
  year = {2026},
  version = {v1},
  url = {https://qubithub.co/qubithub/multistate-vqe},
}

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Circuit

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Suggested citation