{
  "annotation_id": "e55cc2c9-4599-4465-954a-5cf96a76b711",
  "date_created": "2026-02-17T05:53:08.891000Z",
  "date_modified": "2026-02-17T05:53:08.891000Z",
  "file_hash": "1e679c5e234c135fb07c5564e89a09cc2dcf441feb3ade1eaa5328d40005608e",
  "private": false,
  "record": {
    "abstract": "Estimating the ground-state energy of a quantum system is one of the most promising applications for quantum algorithms. Here we propose a variational quantum eigensolver (VQE) \\emph{Ansatz} for finding ground state configuration interaction (CI) wavefunctions. We map CI for fermions to a quantum circuit using a subspace superposition, then apply diagonal Walsh operators to encode the wavefunction. The algorithm can be used to solve both full CI and selected CI wavefunctions, resuling in exact and near-exact solutions for electronic ground states. Both the subspace selection and wavefunction \\emph{Ansatz} can be applied to any Hamiltonian that can be written in a qubit basis. The algorithm bypasses costly classical matrix diagonalizations, which is advantageous for large-scale applications. We demonstrate results for several molecules using quantum simulators and hardware.",
    "arxiv_id": "2601.07037",
    "authors": [
      "Koray Aydo\u011fan",
      "Anna R. Spak",
      "Kade Head-Marsden",
      "Anthony W. Schlimgen"
    ],
    "categories": [
      "quant-ph",
      "math-ph",
      "math.MP"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "title": "Subspace Selected Variational Quantum Configuration Interaction with a Partial Walsh Series",
    "url": "https://arxiv.org/abs/2601.07037",
    "version": "v1"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "21cbd3c7-001b-4e79-8b12-053aee0c2fb0",
    "id": "arXiv Dataset",
    "type": "Model",
    "variant": "snapshot-2026-01-17",
    "version": "0.1.0"
  },
  "user_id": 1000002
}