Advances toward fieldable atom interferometers

Narducci, Frank A.; Black, Adam; Burke, John C.

doi:10.1080/23746149.2021.1946426

Cited by 27 publications

(20 citation statements)

References 185 publications

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“…Inertial sensors based on atom interferometry are increasingly being demonstrated in the field for gravimetry and navigation applications. [1][2][3] Practical considerations such as measurement bandwidth and response to environmental conditions are therefore of high importance as they impact the effectiveness of atom interferometers in real-world applications. Optimization of the control of atom-light interactions in atom interferometers is an important step on the path toward fielded operation of quantum inertial sensors with high performance.…”

Section: Introductionmentioning

confidence: 99%

Time-domain control of a spatial-domain atomic beam interferometer

Black,

Haucke,

Upadhyay

et al. 2024

Quantum Sensing, Imaging, and Precision Metrology II

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Atom interferometers that operate in the spatial domain through continuous measurement of an atomic beam provide benefits in the elimination of sensor dead time and reduced sensitivity to certain noise sources. Further improving its operation, time-domain control of a spatial-domain interferometer can provide necessary methods of error suppression and dynamic range improvement. We model numerically and experimentally demonstrate methods of time-domain control in a 3D-cooled atomic beam interferometer. We demonstrate suppression of magnetic-field-induced phase noise through rapid reversal of the direction of inertial sensitivity at a rate faster than the inverse interrogation time of the interferometer.

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Section: Introductionmentioning

confidence: 99%

Time-domain control of a spatial-domain atomic beam interferometer

Black,

Haucke,

Upadhyay

et al. 2024

Quantum Sensing, Imaging, and Precision Metrology II

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“…This final point means that atomic sensors are in effect pre-calibrated and measurements made using them are reproducible and should be, at least in principle, traceable to the SI system of measurements. Atomic systems already provide a platform for precision clocks [3,4], gyroscopes [5,6], magnetometers [7,8], gravimeters [9,10] and gradiometers [11]. Many atom-based sensors achieve optimal performance by using laser-cooling techniques to create very cold atomic samples [12], and although efforts are ongoing to simplify and miniaturise such apparatus [13,14], laser cooling inevitably introduces significant experimental complexity and cost to the setup.…”

Section: Introduction 1using Atoms As Sensorsmentioning

confidence: 99%

A practical guide to terahertz imaging using thermal atomic vapour

2023

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This tutorial aims to provide details on the underlying principles and methodologies of atom-based terahertz imaging techniques. Terahertz imaging is a growing field of research which can provide complementary information to techniques using other regions of the electromagnetic spectrum. Unlike infrared, visible and ultraviolet radiation, terahertz passes through many everyday materials, such as plastics, cloth and card. Compared with images formed using lower frequencies, terahertz images have superior spatial resolution due to the shorter wavelength, while compared to x-rays and gamma rays, terahertz radiation is non-ionising and safe to use. The tutorial begins with the basic principles of terahertz to optical conversion in alkali atoms before discussing how to construct a model to predict the fluorescent spectra of the atoms, on which the imaging method depends. We discuss the practical aspects of constructing an imaging system, including the subsystem specifications. We then review the typical characteristics of the imaging system including spatial resolution, sensitivity and bandwidth. We conclude with a brief discussion of some potential applications.

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“…3,4 As research and engineering efforts have begun to transition atom interferometers into practical applications, both advantages and challenges have been discovered. 5 In previous work, we have demonstrated a three-dimensionally cooled atomic beam interferometer that attains high fringe contrast and signal-to-noise ratio, and high measurement bandwidth without dead time. 6,7 This atom interferometer platform operates in the spatial domain, while taking advantage of precisely timed modulation of sensor parameters.…”

Section: Introductionmentioning

confidence: 99%

Velocity‐modulated atom interferometry with enhanced dynamic range

Black

Kwolek²

2023

Quantum Sensing, Imaging, and Precision Metrology

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We present new modes of operation in a continuous, 3D-cooled atomic beam interferometer designed for inertial sensing. In these experiments, a moving optical molasses cooling stage provides both three-dimensional cooling and excellent dynamic control over atomic beam velocity. By modulating the atomic beam velocity, we modulate the interferometer scale factor, enabling us to extract the absolute inertial phase over many phase cycles without sacrificing short-term sensitivity. These demonstrations provide a path toward solving the longstanding challenge of limited dynamic range in spatial-domain atom interferometric inertial sensors.

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Advances toward fieldable atom interferometers

Cited by 27 publications

References 185 publications

Time-domain control of a spatial-domain atomic beam interferometer

Time-domain control of a spatial-domain atomic beam interferometer

A practical guide to terahertz imaging using thermal atomic vapour

Velocity‐modulated atom interferometry with enhanced dynamic range

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