metadata.json

{
  "id": "w-state",
  "name": "W State",
  "category": "fundamentals",
  "description": "W state: symmetric 3-qubit entangled state (|001\u27e9 + |010\u27e9 + |100\u27e9)/\u221a3.",
  "long_description": "The W state is the second inequivalent class of genuine tripartite entanglement (the other being GHZ). Unlike GHZ, if one qubit is lost, the remaining two-qubit state is still entangled. The W state is robust to particle loss and has applications in quantum communication and quantum networks.",
  "difficulty": "intermediate",
  "qubit_count": 3,
  "clbit_count": 3,
  "gate_count": 10,
  "depth": 6,
  "tags": [
    "entanglement",
    "fundamentals",
    "w-state",
    "multipartite",
    "robust"
  ],
  "circuit_formats": [
    "qasm2"
  ],
  "source_file": "circuit.qasm",
  "expected_output": "33.3% |001\u27e9, 33.3% |010\u27e9, 33.3% |100\u27e9",
  "references": [
    {
      "title": "D\u00fcr, Vidal, Cirac (2000). Three qubits can be entangled in two inequivalent ways. PRA 62, 062314",
      "url": "https://doi.org/10.1103/PhysRevA.62.062314"
    }
  ],
  "author": "OpenQC Community",
  "license": "MIT",
  "version": "1.0.0"
}