{
  "annotation_id": "c362710f-0774-489d-aef2-a6f8dbde759c",
  "date_created": "2026-03-02T18:01:56.139000Z",
  "date_modified": "2026-03-02T18:01:56.139000Z",
  "file_hash": "843893e2355a8675f5d44ac27c104853531efe95601a47e3e9ac196f37f7115b",
  "private": false,
  "record": {
    "abstract": "By considering the decomposition of a generic two qubit density matrix\npresented by Wootters [W. K. Wootters, Phys. Rev. Lett. {\\bf 80} 2245 (1998)],\nthe robustness of entanglement for any mixed state of two qubit systems is\nobtained algebraically. It is shown that the robustness of entanglement is\nproportional to concurrence and in Bell decomposable density matrices it is\nequal to the concurrence. We also give an analytic expression for two separable\nstates which wipe out all entanglement of these states. Since thus obtained\nrobustness is function of the norm of the vectors in the decomposition we give\nan explicit parameterization for the decomposition.",
    "arxiv_id": "quant-ph/0211156",
    "authors": [
      "S. J. Akhtarshenas",
      "M. A. Jafarizadeh"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Robustness of entanglement for two qubit density matrix",
    "url": "https://arxiv.org/abs/quant-ph/0211156"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "4f88587b-3b1d-4ae5-9fc2-9348454fb397",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}