Table 1 Comparison between gravimetry sensitivities obtained by various experimental systems

From: Gravimetry through non-linear optomechanics

Experiments

System

Δg

Δg/\(\sqrt{{\bf Hz}}\)

Int. time

LaCoste FG5-X12

1 × 10−9

1.5 × 10−7

6.25 h

Atom intf9.

5 × 10−9

4.2 × 10−8

100 s

On-chip BEC10

7.8 × 10−10

5.3 × 10−9

100 s

Optomech. accel22.

3.10 × 10−5

9.81 × 10−7

10−3 sa

  1. These include the commercial LaCoste FG5-X, atom interferometry, gravimetry through on-chip Bose–Einstein condensate (BEC) and classical optomechanical accelerometry. The second column lists the sensitivity Δg in ms−2 and the third column lists the \(\sqrt {{\kern 1pt} \mathrm{Hz}{\kern 1pt} }\)-noise \(\Delta g/\sqrt {{\mathrm{Hz}}}\) in ms−2Hz−1/2. The last column indicates the integration time needed to achieve each sensitivity
  2. aThis value was provided to us by the authors of ref.22
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