dorsal/arxiv
View SchemaQuantum dot single photon sources: Prospects for applications in linear optics quantum information processing
| Authors | A. Kiraz, M. Atature, A. Imamoglu |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0308117 |
| URL | https://arxiv.org/abs/quant-ph/0308117 |
| DOI | 10.1103/PhysRevA.69.032305 |
Abstract
An optical source that produces single photon pulses on demand has potential applications in linear optics quantum computation, provided that stringent requirements on indistinguishability and collection efficiency of the generated photons are met. We show that these are conflicting requirements for anharmonic emitters that are incoherently pumped via reservoirs. As a model for a coherently pumped single photon source, we consider cavity-assisted spin-flip Raman transitions in a single charged quantum dot embedded in a microcavity. We demonstrate that using such a source, arbitrarily high collection efficiency and indistinguishability of the generated photons can be obtained simultaneously with increased cavity coupling. We analyze the role of errors that arise from distinguishability of the single photon pulses in linear optics quantum gates by relating the gate fidelity to the strength of the two-photon interference dip in photon cross-correlation measurements. We find that performing controlled phase operations with error < 1% requires nano-cavities with Purcell factors F_P >= 40 in the absence of dephasing, without necessitating the strong coupling limit.
{
"annotation_id": "3818c767-7175-40f3-8cb9-58531053117c",
"date_created": "2026-03-02T18:02:02.269000Z",
"date_modified": "2026-03-02T18:02:02.269000Z",
"file_hash": "ad64e89130de400b7e50d9901ad09a01a9478721447d11829e0cfa1dd8115dbd",
"private": false,
"record": {
"abstract": "An optical source that produces single photon pulses on demand has potential\napplications in linear optics quantum computation, provided that stringent\nrequirements on indistinguishability and collection efficiency of the generated\nphotons are met. We show that these are conflicting requirements for anharmonic\nemitters that are incoherently pumped via reservoirs. As a model for a\ncoherently pumped single photon source, we consider cavity-assisted spin-flip\nRaman transitions in a single charged quantum dot embedded in a microcavity. We\ndemonstrate that using such a source, arbitrarily high collection efficiency\nand indistinguishability of the generated photons can be obtained\nsimultaneously with increased cavity coupling. We analyze the role of errors\nthat arise from distinguishability of the single photon pulses in linear optics\nquantum gates by relating the gate fidelity to the strength of the two-photon\ninterference dip in photon cross-correlation measurements. We find that\nperforming controlled phase operations with error \u003c 1% requires nano-cavities\nwith Purcell factors F_P \u003e= 40 in the absence of dephasing, without\nnecessitating the strong coupling limit.",
"arxiv_id": "quant-ph/0308117",
"authors": [
"A. Kiraz",
"M. Atature",
"A. Imamoglu"
],
"categories": [
"quant-ph",
"cond-mat.mes-hall"
],
"doi": "10.1103/PhysRevA.69.032305",
"title": "Quantum dot single photon sources: Prospects for applications in linear optics quantum information processing",
"url": "https://arxiv.org/abs/quant-ph/0308117"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "183220c4-5c44-4e08-997c-9769d27b20ba",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}