dorsal/arxiv
View SchemaQuantum limit of optical magnetometry in the presence of ac-Stark shifts
| Authors | M. Fleischhauer, A. B. Matsko, M. O. Scully |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0001072 |
| URL | https://arxiv.org/abs/quant-ph/0001072 |
| DOI | 10.1103/PhysRevA.62.013808 |
Abstract
We analyze systematic (classical) and fundamental (quantum) limitations of the sensitivity of optical magnetometers resulting from ac-Stark shifts. We show that in contrast to absorption-based techniques, the signal reduction associated with classical broadening can be compensated in magnetometers based on phase measurements using electromagnetically induced transparency (EIT). However due to ac-Stark associated quantum noise the signal-to-noise ratio of EIT-based magnetometers attains a maximum value at a certain laser intensity. This value is independent on the quantum statistics of the light and defines a standard quantum limit of sensitivity. We demonstrate that an EIT-based optical magnetometer in Faraday configuration is the best candidate to achieve the highest sensitivity of magnetic field detection and give a detailed analysis of such a device.
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"abstract": "We analyze systematic (classical) and fundamental (quantum) limitations of\nthe sensitivity of optical magnetometers resulting from ac-Stark shifts. We\nshow that in contrast to absorption-based techniques, the signal reduction\nassociated with classical broadening can be compensated in magnetometers based\non phase measurements using electromagnetically induced transparency (EIT).\nHowever due to ac-Stark associated quantum noise the signal-to-noise ratio of\nEIT-based magnetometers attains a maximum value at a certain laser intensity.\nThis value is independent on the quantum statistics of the light and defines a\nstandard quantum limit of sensitivity. We demonstrate that an EIT-based optical\nmagnetometer in Faraday configuration is the best candidate to achieve the\nhighest sensitivity of magnetic field detection and give a detailed analysis of\nsuch a device.",
"arxiv_id": "quant-ph/0001072",
"authors": [
"M. Fleischhauer",
"A. B. Matsko",
"M. O. Scully"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.62.013808",
"title": "Quantum limit of optical magnetometry in the presence of ac-Stark shifts",
"url": "https://arxiv.org/abs/quant-ph/0001072"
},
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