dorsal/arxiv
View SchemaFrom Linear Optical Quantum Computing to Heisenberg-Limited Interferometry
| Authors | Hwang Lee, Pieter Kok, Colin P. Williams, Jonathan P. Dowling |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0312169 |
| URL | https://arxiv.org/abs/quant-ph/0312169 |
| DOI | 10.1088/1464-4266/6/8/026 |
| Journal | J. Opt. B 6, S796 (2004) |
Abstract
The working principles of linear optical quantum computing are based on photodetection, namely, projective measurements. The use of photodetection can provide efficient nonlinear interactions between photons at the single-photon level, which is technically problematic otherwise. We report an application of such a technique to prepare quantum correlations as an important resource for Heisenberg-limited optical interferometry, where the sensitivity of phase measurements can be improved beyond the usual shot-noise limit. Furthermore, using such nonlinearities, optical quantum nondemolition measurements can now be carried out at the single-photon level.
{
"annotation_id": "eec3b143-f6ed-45f7-af49-3fa606be3798",
"date_created": "2026-03-02T18:02:02.668000Z",
"date_modified": "2026-03-02T18:02:02.668000Z",
"file_hash": "f5d15e6c11b16772ed4a1372211b9e387735890f9d8335f02f4b6b99f67698b4",
"private": false,
"record": {
"abstract": "The working principles of linear optical quantum computing are based on\nphotodetection, namely, projective measurements. The use of photodetection can\nprovide efficient nonlinear interactions between photons at the single-photon\nlevel, which is technically problematic otherwise. We report an application of\nsuch a technique to prepare quantum correlations as an important resource for\nHeisenberg-limited optical interferometry, where the sensitivity of phase\nmeasurements can be improved beyond the usual shot-noise limit. Furthermore,\nusing such nonlinearities, optical quantum nondemolition measurements can now\nbe carried out at the single-photon level.",
"arxiv_id": "quant-ph/0312169",
"authors": [
"Hwang Lee",
"Pieter Kok",
"Colin P. Williams",
"Jonathan P. Dowling"
],
"categories": [
"quant-ph"
],
"doi": "10.1088/1464-4266/6/8/026",
"journal_ref": "J. Opt. B 6, S796 (2004)",
"title": "From Linear Optical Quantum Computing to Heisenberg-Limited Interferometry",
"url": "https://arxiv.org/abs/quant-ph/0312169"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "2b2b7445-6de1-43b4-8369-017cf2293976",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}