scholarly journals Effects related to the temperature of atoms in an atom interferometry gravimeter based on ultra-cold atoms

2021 ◽  
Vol 29 (19) ◽  
pp. 30007
Author(s):  
Heng Zhang ◽  
Xudong Ren ◽  
Wenhua Yan ◽  
Yuan Cheng ◽  
Hang Zhou ◽  
...  
Keyword(s):  
Cold Atoms ◽  
Atom Interferometry

Cold atom interferometry for inertial sensing in the field

2020 ◽  
Vol 9 (5) ◽  
pp. 221-225
Author(s):  
Ravi Kumar ◽  
Ana Rakonjac
Keyword(s):  
High Precision ◽  
Cold Atoms ◽  
Cold Atom ◽  
Atom Interferometry ◽  
Precision Measurements ◽  
Inertial Sensing ◽  
Fundamental Physics ◽  
Recent Developments ◽  
Resource Exploration ◽  
Atom Interferometers

AbstractAtom interferometry is one of the most promising technologies for high precision measurements. It has the potential to revolutionise many different sectors, such as navigation and positioning, resource exploration, geophysical studies, and fundamental physics. After decades of research in the field of cold atoms, the technology has reached a stage where commercialisation of cold atom interferometers has become possible. This article describes recent developments, challenges, and prospects for quantum sensors for inertial sensing based on cold atom interferometry techniques.

scholarly journals Optomechanical resonator-enhanced atom interferometry

2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Logan L. Richardson ◽  
Ashwin Rajagopalan ◽  
Henning Albers ◽  
Christian Meiners ◽  
Dipankar Nath ◽  
...  
Keyword(s):  
Cold Atoms ◽  
Dynamic Range ◽  
Atom Interferometry ◽  
Matter Wave ◽  
Noisy Environment ◽  
Large Dynamic Range ◽  
Matter Waves ◽  
Large Potential

AbstractMatter-wave interferometry and spectroscopy of optomechanical resonators offer complementary advantages. Interferometry with cold atoms is employed for accurate and long-term stable measurements, yet it is challenged by its dynamic range and cyclic acquisition. Spectroscopy of optomechanical resonators features continuous signals with large dynamic range, however it is generally subject to drifts. In this work, we combine the advantages of both devices. Measuring the motion of a mirror and matter waves interferometrically with respect to a joint reference allows us to operate an atomic gravimeter in a seismically noisy environment otherwise inhibiting readout of its phase. Our method is applicable to a variety of quantum sensors and shows large potential for improvements of both elements by quantum engineering.

scholarly journals High Sensitivity Multi-Axes Rotation Sensing Using Large Momentum Transfer Point Source Atom Interferometry

Atoms ◽  
2021 ◽  
Vol 9 (3) ◽  
pp. 51
Author(s):  
Jinyang Li ◽  
Gregório R. M. da Silva ◽  
Wayne C. Huang ◽  
Mohamed Fouda ◽  
Jason Bonacum ◽  
...  
Keyword(s):  
Point Source ◽  
Momentum Transfer ◽  
Cold Atoms ◽  
Classical Model ◽  
Center Of Mass ◽  
High Sensitivity ◽  
Atom Interferometry ◽  
Large Momentum Transfer ◽  
Large Momentum ◽  
Initial Size

A point source interferometer (PSI) is a device where atoms are split and recombined by applying a temporal sequence of Raman pulses during the expansion of a cloud of cold atoms behaving approximately as a point source. The PSI can work as a sensitive multi-axes gyroscope that can automatically filter out the signal from accelerations. The phase shift arising from the rotations is proportional to the momentum transferred to each atom from the Raman pulses. Therefore, by increasing the momentum transfer, it should be possible to enhance the sensitivity of the PSI. Here, we investigate the degree of enhancement in sensitivity that could be achieved by augmenting the PSI with large momentum transfer (LMT) employing a sequence of many Raman pulses with alternating directions. We analyze how factors such as Doppler detuning, spontaneous emission, and the finite initial size of the atomic cloud compromise the advantage of LMT and how to find the optimal momentum transfer under these limitations, with both the semi-classical model and a model under which the motion of the center of mass of each atom is described quantum mechanically. We identify a set of realistic parameters for which LMT can improve the PSI by a factor of nearly 40.

Loading a dressed Zeeman trap with cold atoms

2004 ◽  
Vol 116 ◽  
pp. 247-252 ◽  
Author(s):  
Y. Colombe ◽  
B. Mercier ◽  
H. Perrin ◽  
V. Lorent
Keyword(s):  
Cold Atoms

Strategic Applications of Ultra-Cold Atoms

2008 ◽  
Author(s):  
Mara Prentiss ◽  
Vladan Vuletic Mark /Kasevich ◽  
Wolfgang Ketterle ◽  
Pierre Meystre
Keyword(s):  
Cold Atoms
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