dorsal/arxiv
View SchemaThresholds for Linear Optics Quantum Computing with Photon Loss at the Detectors
| Authors | Marcus Silva, Martin Roetteler, Christof Zalka |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0502101 |
| URL | https://arxiv.org/abs/quant-ph/0502101 |
| DOI | 10.1103/PhysRevA.72.032307 |
| Journal | Phys. Rev. A 72, 032307 (2005) |
Abstract
We calculate the error threshold for the linear optics quantum computing proposal by Knill, Laflamme and Milburn [Nature 409, pp. 46--52 (2001)] under an error model where photon detectors have efficiency <100% but all other components -- such as single photon sources, beam splitters and phase shifters -- are perfect and introduce no errors. We make use of the fact that the error model induced by the lossy hardware is that of an erasure channel, i.e., the error locations are always known. Using a method based on a Markov chain description of the error correction procedure, our calculations show that, with the 7 qubit CSS quantum code, the gate error threshold for fault tolerant quantum computation is bounded below by a value between 1.78% and 11.5% depending on the construction of the entangling gates.
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"abstract": "We calculate the error threshold for the linear optics quantum computing\nproposal by Knill, Laflamme and Milburn [Nature 409, pp. 46--52 (2001)] under\nan error model where photon detectors have efficiency \u003c100% but all other\ncomponents -- such as single photon sources, beam splitters and phase shifters\n-- are perfect and introduce no errors. We make use of the fact that the error\nmodel induced by the lossy hardware is that of an erasure channel, i.e., the\nerror locations are always known. Using a method based on a Markov chain\ndescription of the error correction procedure, our calculations show that, with\nthe 7 qubit CSS quantum code, the gate error threshold for fault tolerant\nquantum computation is bounded below by a value between 1.78% and 11.5%\ndepending on the construction of the entangling gates.",
"arxiv_id": "quant-ph/0502101",
"authors": [
"Marcus Silva",
"Martin Roetteler",
"Christof Zalka"
],
"categories": [
"quant-ph",
"cs.ET"
],
"doi": "10.1103/PhysRevA.72.032307",
"journal_ref": "Phys. Rev. A 72, 032307 (2005)",
"title": "Thresholds for Linear Optics Quantum Computing with Photon Loss at the Detectors",
"url": "https://arxiv.org/abs/quant-ph/0502101"
},
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