Atomic Magnetometer Multisensor Array for rf Interference Mitigation and Unshielded Detection of Nuclear Quadrupole Resonance

Robert J. Cooper; David W. Prescott; Peter Matz; Karen L. Sauer; Nezih Dural; Michael V. Romalis; Elizabeth L. Foley; Thomas W. Kornack; Mark Monti; Jeffrey Okamitsu

doi:10.1103/PhysRevApplied.6.064014

Atomic Magnetometer Multisensor Array for rf Interference Mitigation and Unshielded Detection of Nuclear Quadrupole Resonance

Robert J. Cooper, David W. Prescott, Peter Matz, Karen L. Sauer, Nezih Dural, Michael V. Romalis, Elizabeth L. Foley, Thomas W. Kornack, Mark Monti, Jeffrey Okamitsu

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41 Scopus citations

Abstract

An array of four Rb87 vector magnetometers is used to detect nuclear quadrupole resonance signals in an unshielded environment at 1 MHz. With a baseline of 25 cm, the length of the array, radio-frequency interference mitigation is also demonstrated; a radio-station signal is suppressed by a factor of 20 without degradation to the signal of interest. With these compact sensors, in which the probe beam passes through twice, the fundamental limit to detection sensitivity is found to be photon-shot noise. More passes of the probe beam overcome this limitation. With a sensor of similar effective volume, 0.25 cm3, but 25× more passes, the sensitivity is improved by an order of magnitude to 1.7±0.2 fT/Hz.

Original language	English (US)
Article number	064014
Journal	Physical Review Applied
Volume	6
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevApplied.6.064014
State	Published - Dec 27 2016
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1103/PhysRevApplied.6.064014

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title = "Atomic Magnetometer Multisensor Array for rf Interference Mitigation and Unshielded Detection of Nuclear Quadrupole Resonance",

abstract = "An array of four Rb87 vector magnetometers is used to detect nuclear quadrupole resonance signals in an unshielded environment at 1 MHz. With a baseline of 25 cm, the length of the array, radio-frequency interference mitigation is also demonstrated; a radio-station signal is suppressed by a factor of 20 without degradation to the signal of interest. With these compact sensors, in which the probe beam passes through twice, the fundamental limit to detection sensitivity is found to be photon-shot noise. More passes of the probe beam overcome this limitation. With a sensor of similar effective volume, 0.25 cm3, but 25× more passes, the sensitivity is improved by an order of magnitude to 1.7±0.2 fT/Hz.",

author = "Cooper, {Robert J.} and Prescott, {David W.} and Peter Matz and Sauer, {Karen L.} and Nezih Dural and Romalis, {Michael V.} and Foley, {Elizabeth L.} and Kornack, {Thomas W.} and Mark Monti and Jeffrey Okamitsu",

note = "Publisher Copyright: {\textcopyright} 2016 American Physical Society.",

year = "2016",

month = dec,

day = "27",

doi = "10.1103/PhysRevApplied.6.064014",

language = "English (US)",

volume = "6",

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T1 - Atomic Magnetometer Multisensor Array for rf Interference Mitigation and Unshielded Detection of Nuclear Quadrupole Resonance

AU - Cooper, Robert J.

AU - Prescott, David W.

AU - Matz, Peter

AU - Sauer, Karen L.

AU - Dural, Nezih

AU - Romalis, Michael V.

AU - Foley, Elizabeth L.

AU - Kornack, Thomas W.

AU - Monti, Mark

AU - Okamitsu, Jeffrey

PY - 2016/12/27

Y1 - 2016/12/27

N2 - An array of four Rb87 vector magnetometers is used to detect nuclear quadrupole resonance signals in an unshielded environment at 1 MHz. With a baseline of 25 cm, the length of the array, radio-frequency interference mitigation is also demonstrated; a radio-station signal is suppressed by a factor of 20 without degradation to the signal of interest. With these compact sensors, in which the probe beam passes through twice, the fundamental limit to detection sensitivity is found to be photon-shot noise. More passes of the probe beam overcome this limitation. With a sensor of similar effective volume, 0.25 cm3, but 25× more passes, the sensitivity is improved by an order of magnitude to 1.7±0.2 fT/Hz.

AB - An array of four Rb87 vector magnetometers is used to detect nuclear quadrupole resonance signals in an unshielded environment at 1 MHz. With a baseline of 25 cm, the length of the array, radio-frequency interference mitigation is also demonstrated; a radio-station signal is suppressed by a factor of 20 without degradation to the signal of interest. With these compact sensors, in which the probe beam passes through twice, the fundamental limit to detection sensitivity is found to be photon-shot noise. More passes of the probe beam overcome this limitation. With a sensor of similar effective volume, 0.25 cm3, but 25× more passes, the sensitivity is improved by an order of magnitude to 1.7±0.2 fT/Hz.

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Atomic Magnetometer Multisensor Array for rf Interference Mitigation and Unshielded Detection of Nuclear Quadrupole Resonance

Abstract

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