dorsal/arxiv
View SchemaGeneral limit to non-destructive optical detection of atoms
| Authors | J. J. Hope, J. D. Close |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0409160 |
| URL | https://arxiv.org/abs/quant-ph/0409160 |
| DOI | 10.1103/PhysRevA.71.043822 |
Abstract
We demonstrate that there is a fundamental limit to the sensitivity of phase-based detection of atoms with light for a given maximum level of allowable spontaneous emission. This is a generalisation of previous results for two-level and three-level atoms. The limit is due to an upper bound on the phase shift that can be imparted on a laser beam for a given excited state population. Specifially, we show that no single-pass optical technique using classical light, based on any number of lasers or coherences between any number of levels, can exceed the limit imposed by the two-level atom. This puts significant restrictions on potential non-destructive optical measurement schemes.
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"abstract": "We demonstrate that there is a fundamental limit to the sensitivity of\nphase-based detection of atoms with light for a given maximum level of\nallowable spontaneous emission. This is a generalisation of previous results\nfor two-level and three-level atoms. The limit is due to an upper bound on the\nphase shift that can be imparted on a laser beam for a given excited state\npopulation. Specifially, we show that no single-pass optical technique using\nclassical light, based on any number of lasers or coherences between any number\nof levels, can exceed the limit imposed by the two-level atom. This puts\nsignificant restrictions on potential non-destructive optical measurement\nschemes.",
"arxiv_id": "quant-ph/0409160",
"authors": [
"J. J. Hope",
"J. D. Close"
],
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"quant-ph"
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"doi": "10.1103/PhysRevA.71.043822",
"title": "General limit to non-destructive optical detection of atoms",
"url": "https://arxiv.org/abs/quant-ph/0409160"
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