Interferometric measurement of micro-g acceleration with levitated atoms

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The sensitivity of atom interferometers is usually limited by the observation time of a free falling cloud of atoms in Earth's gravitational field. Considerable efforts are currently made to increase this observation time, e.g. in fountain experiments, drop towers and in space. In this article, we experimentally study and discuss the use of magnetic levitation for interferometric precision measurements. We employ a Bose-Einstein condensate of cesium atoms with tuneable interaction and a Michelson-interferometer scheme for the detection of micro-g acceleration. In addition, we demonstrate observation times of 1s, which are comparable to current drop-tower experiments, we study the curvature of our force field, and we observe the effects of a phase-shifting element in the interferometer paths.
LanguageEnglish
Article number053028
Number of pages11
JournalNew Journal of Physics
Volume21
Issue number5
Early online date23 Apr 2019
DOIs
Publication statusPublished - 22 May 2019

Fingerprint

drop towers
interferometers
atoms
levitation
Michelson interferometers
Bose-Einstein condensates
falling
cesium
gravitational fields
field theory (physics)
curvature
sensitivity
interactions

Keywords

  • interferometry
  • BEC
  • metrology
  • acceleration measurement

Cite this

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title = "Interferometric measurement of micro-g acceleration with levitated atoms",
abstract = "The sensitivity of atom interferometers is usually limited by the observation time of a free falling cloud of atoms in Earth's gravitational field. Considerable efforts are currently made to increase this observation time, e.g. in fountain experiments, drop towers and in space. In this article, we experimentally study and discuss the use of magnetic levitation for interferometric precision measurements. We employ a Bose-Einstein condensate of cesium atoms with tuneable interaction and a Michelson-interferometer scheme for the detection of micro-g acceleration. In addition, we demonstrate observation times of 1s, which are comparable to current drop-tower experiments, we study the curvature of our force field, and we observe the effects of a phase-shifting element in the interferometer paths.",
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author = "{Di Carli}, A and Colquhoun, {C D} and S Kuhr and E Haller",
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Interferometric measurement of micro-g acceleration with levitated atoms. / Di Carli, A; Colquhoun, C D; Kuhr, S; Haller, E.

In: New Journal of Physics, Vol. 21, No. 5, 053028, 22.05.2019.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Interferometric measurement of micro-g acceleration with levitated atoms

AU - Di Carli, A

AU - Colquhoun, C D

AU - Kuhr, S

AU - Haller, E

PY - 2019/5/22

Y1 - 2019/5/22

N2 - The sensitivity of atom interferometers is usually limited by the observation time of a free falling cloud of atoms in Earth's gravitational field. Considerable efforts are currently made to increase this observation time, e.g. in fountain experiments, drop towers and in space. In this article, we experimentally study and discuss the use of magnetic levitation for interferometric precision measurements. We employ a Bose-Einstein condensate of cesium atoms with tuneable interaction and a Michelson-interferometer scheme for the detection of micro-g acceleration. In addition, we demonstrate observation times of 1s, which are comparable to current drop-tower experiments, we study the curvature of our force field, and we observe the effects of a phase-shifting element in the interferometer paths.

AB - The sensitivity of atom interferometers is usually limited by the observation time of a free falling cloud of atoms in Earth's gravitational field. Considerable efforts are currently made to increase this observation time, e.g. in fountain experiments, drop towers and in space. In this article, we experimentally study and discuss the use of magnetic levitation for interferometric precision measurements. We employ a Bose-Einstein condensate of cesium atoms with tuneable interaction and a Michelson-interferometer scheme for the detection of micro-g acceleration. In addition, we demonstrate observation times of 1s, which are comparable to current drop-tower experiments, we study the curvature of our force field, and we observe the effects of a phase-shifting element in the interferometer paths.

KW - interferometry

KW - BEC

KW - metrology

KW - acceleration measurement

UR - https://iopscience.iop.org/journal/1367-2630

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