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Simultaneous measurement of gravity acceleration and gravity gradient with an atom interferometer
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10.1063/1.4751112
/content/aip/journal/apl/101/11/10.1063/1.4751112
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/11/10.1063/1.4751112
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Left: fringe pattern obtained in a single-cloud interferometer, with a time T = 160 ms between Raman pulses; each point represents a single measurement; the continuous line is a least-square fit to the data using Eq. (2) after determining the A and B parameters from Eq. (3) . Right: histogram of measured data; dashed line is a least-squares fit to the data using Eq. (3) .

Image of FIG. 2.
FIG. 2.

Histograms of 1800 values with T = 160 ms, calculated according to Eqs. (4) (in black) and (5) (in red); the solid lines represent least-squares fits with folded Gaussians.

Image of FIG. 3.
FIG. 3.

Reconstructed fringes for T = 160 ms: the measurements and from the two simultaneous interferometers are plotted versus the calculated phase ; each fringe contains 1800 experimental points, and each point represents a single measurement; in (a), the phase is computed from the upper interferometer by applying Eq. (4) after determining A and B with Eq. (3) ; in (b), is computed with Eq. (5) .

Image of FIG. 4.
FIG. 4.

Variation of Earth's gravity as a function of time. Each dot is obtained by averaging the measured data over a 1 h interval. Error bars represent the statistical error. The solid line is a fit to predicted Earth's tides with a baseline as the only free parameter.

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/content/aip/journal/apl/101/11/10.1063/1.4751112
2012-09-12
2014-04-21
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Simultaneous measurement of gravity acceleration and gravity gradient with an atom interferometer
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/11/10.1063/1.4751112
10.1063/1.4751112
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