Active vibration isolation system based on the LADRC algorithm for atom interferometry

Zhou, Yin; Luo, Dongyun; Wu, Bin; Cheng, Bing; Lin, Qiang

doi:10.1364/ao.390168

Cited by 16 publications

(10 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As mentioned in part III E for increased T , parasitic vibrations limit the sensitivity. Different isolation methods have been used, based on superspring stabilization 70 , or the use of passive isolation platforms 25 , eventually combined with additional active stabilization feedback control [71][72][73][74][75] , or the correlation of the interferometer phase with the remaining vibration noise measured by a classical sensor, either a seismometer 76 , or an accelerometer 77 . The latter method allows for correcting the interferometer phase, either via postcorrection 25 , or feed forward compensation in real time on the Raman lasers phase difference 77 .…”

Section: Sensitivity Limitsmentioning

confidence: 99%

High-accuracy inertial measurements with cold-atom sensors

Geiger

Landragin

Merlet

et al. 2020

AVS Quantum Science

127

View full text Add to dashboard Cite

The research on cold-atom interferometers gathers a large community of about 50 groups worldwide both in the academic and now in the industrial sectors. The interest in this sub-field of quantum sensing and metrology lies in the large panel of possible applications of cold-atom sensors for measuring inertial and gravitational signals with a high level of stability and accuracy. This review presents the evolution of the field over the last 30 years and focuses on the acceleration of the research effort in the last 10 years. The article describes the physics principle of cold-atom gravito-inertial sensors as well as the main parts of hardware and the expertise required when starting the design of such sensors. It then reviews the progress in the development of instruments measuring gravitational and inertial signals, with a highlight on the limitations to the performances of the sensors, on their applications, and on the latest directions of research.

show abstract

Section: Sensitivity Limitsmentioning

confidence: 99%

High-accuracy inertial measurements with cold-atom sensors

Geiger

Landragin

Merlet

et al. 2020

AVS Quantum Science

127

View full text Add to dashboard Cite

show abstract

“…Possibly, a magnetic suspension of the cylinders could be employed to reduce any periodic vibrations due to the cylinders' imperfections [44]. The external noise can be significantly lowered by shielding the interferometer from electromagnetic background, as well as installing the detection apparatus on an active vibration isolation system [45].…”

Section: Methodsmentioning

confidence: 99%

Atom interferometers and a small-scale test of general relativity

Mikołaj¹

2022

Preprint

View full text Add to dashboard Cite

Since the first appearance of general relativity in 1916, various experiments have been conducted to test the theory. Due to the weakness of the interactions involved, all of the documented tests were carried out in a gravitational field generated by objects of an astronomical scale. We propose an idea for an experiment that could detect purely general-relativistic effects in a lab-generated gravitational field. It is shown that a set of dense rapidly-revolving cylinders produce a frame-dragging effect substantial enough to be two orders of magnitude away from the observable range of the next generation of atomic interferometers.. The metric tensor due to a uniform rotating axisymmetric body in the weak-field limit is calculated and the phaseshift formula for the interferometer is derived. This article is meant to demonstrate feasibility of the concept and stimulate further research into the field of low-scale experiments in general relativity. It is by no means a fully developed experiment proposal.

show abstract

“…In [94], Zhou et al put forward a cold atomic interference active vibration isolation system based on linear auto disturbance rejection control (LADRC) algorithm to implement the effective isolation for the low frequency noise at 0.1 Hz and below. The active vibration isolation system was compact and stable while offering low frequency and good performance.…”

Section: Active Vibration Isolationmentioning

confidence: 99%

Effects and Prospects of the Vibration Isolation Methods for an Atomic Interference Gravimeter

Gong

Liu

Huang

et al. 2022

Sensors

View full text Add to dashboard Cite

An atomic interference gravimeter (AIG) is of great value in underwater aided navigation, but one of the constraints on its accuracy is vibration noise. For this reason, technology must be developed for its vibration isolation. Up to now, three methods have mainly been employed to suppress the vibration noise of an AIG, including passive vibration isolation, active vibration isolation and vibration compensation. This paper presents a study on how vibration noise affects the measurement of an AIG, a review of the research findings regarding the reduction of its vibration, and the prospective development of vibration isolation technology for an AIG. Along with the development of small and movable AIGs, vibration isolation technology will be better adapted to the challenging environment and be strongly resistant to disturbance in the future.

show abstract

Active vibration isolation system based on the LADRC algorithm for atom interferometry

Cited by 16 publications

References 39 publications

High-accuracy inertial measurements with cold-atom sensors

High-accuracy inertial measurements with cold-atom sensors

Atom interferometers and a small-scale test of general relativity

Effects and Prospects of the Vibration Isolation Methods for an Atomic Interference Gravimeter

Contact Info

Product

Resources

About