Mobile quantum gravimeter with a novel pyramidal magneto-optical trap

Wu, Xuejian; Weiner, Storm E.; Pagel, Zachary; Malek, Bola; Müller, Holger

doi:10.1364/cleo_at.2020.jw2c.5

Cited by 4 publications

(2 citation statements)

References 6 publications

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“…In 2019, Wu and Müller et al [75,76] developed a new mobile CAG, which used an inverted MOT with a through-hole pyramidal shape. It was realized to measure the absolute gravity at Berkeley Hills in a field vehicle-mounted environment.…”

Section: Rise Of Single Beamed Motsmentioning

confidence: 99%

Magneto-Optical Traps for Cold Atomic Gravimetry: Research Status and Development Trends

et al. 2023

Applied Sciences

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The cold atomic gravimeter (CAG) has the advantage of high measurement accuracy and does not need to be calibrated on a regular basis. To achieve cold atom interference, it is first necessary to cool and trap the atoms by magneto-optical trap (MOT). However, there are many types of MOTs, and their trapping and cooling results directly affect the atomic interference, and thus, the measurement accuracy of a CAG. MOTs should be designed or selected correctly for different application needs. This paper reviews the research history of MOTs and analyzes their structure and principles. The current status of applications of different types of MOTs is highlighted. Their advantages and disadvantages are summarized, and perspectives for the development of MOTs for cold atomic gravimetry are presented.

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Section: Rise Of Single Beamed Motsmentioning

confidence: 99%

Magneto-Optical Traps for Cold Atomic Gravimetry: Research Status and Development Trends

et al. 2023

Applied Sciences

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“…With this kind of structure, around 2000 atoms were trapped in one single MOT, which is not enough for a CAGS application. However, this pyramid structure MOT just needs one single laser beam to trap atoms, which can be applied to simplify the MOT structure [83]. Inspired by this design, a CAGS was realized using a large-scale pyramidal structure with a sensitivity of 1.7 × 10 −6 m/s 2 at one second [84].…”

Section: Figure 7 (A)mentioning

confidence: 99%

Review of Atom Chips for Absolute Gravity Sensors

Shi

et al. 2023

Sensors

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As a powerful tool in scientific research and industrial technologies, the cold atom absolute gravity sensor (CAGS) based on cold atom interferometry has been proven to be the most promising new generation high-precision absolute gravity sensor. However, large size, heavy weight, and high–power consumption are still the main restriction factors of CAGS being applied for practical applications on mobile platforms. Combined with cold atom chips, it is possible to drastically reduce the complexity, weight, and size of CAGS. In this review, we started from the basic theory of atom chips to chart a clear development path to related technologies. Several related technologies including micro-magnetic traps, micro magneto–optical traps, material selection, fabrication, and packaging methods have been discussed. This review gives an overview of the current developments in a variety of cold atom chips, and some actual CAGS systems based on atom chips are also discussed. We summarize by listing some of the challenges and possible directions for further development in this area.

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Research Prospects for the Optimization of Magneto-Optical Trap Parameters for Cold Atom Interferometers

Li,

Qin,

et al. 2024

Applied Sciences

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This study examines parameter optimization for magneto-optical traps (MOTs) to increase trapping efficiency and improve cold atom interferometer performance. Operational principles of MOTs, control parameters, and performance metrics such as volume, atomic loading time, and resonance frequency are discussed. This research also reviews existing studies on the parameter optimization of MOTs, highlights challenges, and offers suggestions for future research. It proposes enhancing performance metrics, optimization techniques, and operational models to increase precision and practicality in parameter optimization for MOTs in cold atom interferometers.

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Mobile quantum gravimeter with a novel pyramidal magneto-optical trap

Abstract: We demonstrate a mobile quantum gravimeter measuring tidal gravity variations in the laboratory and surveying gravity in the field. With simplicity and sensitivity, our instrument paves the way for bringing quantum sensors to field applications.

Cited by 4 publications

References 6 publications

Magneto-Optical Traps for Cold Atomic Gravimetry: Research Status and Development Trends

Magneto-Optical Traps for Cold Atomic Gravimetry: Research Status and Development Trends

Review of Atom Chips for Absolute Gravity Sensors

Research Prospects for the Optimization of Magneto-Optical Trap Parameters for Cold Atom Interferometers

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