{
  "annotation_id": "285993f2-dd6c-49c7-acea-fc3f1f437003",
  "date_created": "2026-03-02T18:02:48.001000Z",
  "date_modified": "2026-03-02T18:02:48.001000Z",
  "file_hash": "eb2cb5afb21d5ed4c48961f7017502e8629402c5d41219f5a72287bebcd92d7d",
  "private": false,
  "record": {
    "abstract": "We propose a method for implementation of a quantum computer using artificial\nmolecules. The artificial molecule consists of two coupled quantum dots stacked\nalong z direction and one single electron. One-qubit and two-qubit gates are\nconstructed by one molecule and two coupled molecules, respectively.The ground\nstate and the first excited state of the molecule are used to encode the |0\u003e\nand |1\u003e states of a qubit. The qubit is manipulated by a resonant\nelectromagnetic wave that is applied directly to the qubit through a microstrip\nline. The coupling between two qubits in a quantum controlled NOT gate is\nswitched on (off) by floating (grounding) the metal film electrodes. We study\nthe operations of the gates by using a box-shaped quantum dot model and\nnumerically solving a time-dependent Schridinger equation, and demonstrate that\nthe quantum gates can perform the quantum computation. The operating speed of\nthe gates is about one operation per 4ps. The reading operation of the output\nof the quantum computer can be performed by detecting the polarization of the\nqubits.",
    "arxiv_id": "quant-ph/9912036",
    "authors": [
      "Nan-Jian Wu",
      "M. Kamada",
      "A. Natori",
      "H. Yasunaga"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1143/JJAP.39.4642",
    "title": "Quantum Computer Using Coupled Quantum Dot Molecules",
    "url": "https://arxiv.org/abs/quant-ph/9912036"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "ed5e5521-ca2a-4066-81eb-26e8e4f67dbd",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}