2014
DOI: 10.1103/physrevlett.112.203002
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Quantum Test of the Universality of Free Fall

Abstract: We simultaneously measure the gravitationally-induced phase shift in two Raman-type matter-wave interferometers operated with laser-cooled ensembles of $^{87}$Rb and $^{39}$K atoms. Our measurement yields an E\"otv\"os ratio of $\eta_{\text{Rb,K}}=(0.3\pm 5.4)\times 10^{-7}$. We briefly estimate possible bias effects and present strategies for future improvements

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Cited by 318 publications
(328 citation statements)
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“…Today, different theories predict its violation [27,28] in the purpose of unifying general relativity with non-gravitational fundamental interactions as described by the standard model in a quantum approach. Matter-wave tests thus offer new alternatives by their intrinsically quantum nature, radically different from their classical counterparts [24], that can bring new constraints and bounds on the unifying theories.…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…Today, different theories predict its violation [27,28] in the purpose of unifying general relativity with non-gravitational fundamental interactions as described by the standard model in a quantum approach. Matter-wave tests thus offer new alternatives by their intrinsically quantum nature, radically different from their classical counterparts [24], that can bring new constraints and bounds on the unifying theories.…”
Section: Introductionmentioning
confidence: 99%
“…Many experiments and projects worldwide, also prove that quantum sensors appear to be very promising tools for exploring many aspects of fundamental physics as the determination of the fine-structure constant α [16] and the Newtonian gravity constant G [17,18], the detection of gravitational waves [19], the exploration of shortrange forces [20,21] and quantum based tests of the Weak Equivalence Principle (WEP) [22][23][24][25][26].…”
Section: Introductionmentioning
confidence: 99%
“…Further increases to the sensitivity of atom interferometers would allow for some exciting science, such as improved tests of the weak equivalence principle [16][17][18], searches for quantum gravitational effects [19], and the measurement of gravitational waves [20,21]. Current state-of-the-art atom interferometers utilize uncorrelated sources, which can operate no better than the standard quantum limit (SQL)-i.e., the sensitivity scales as 1/ √ N where N is the number of detected atoms.…”
Section: Introductionmentioning
confidence: 99%
“…These devices are so precise that they are used today as references for fundamental constants (mass, gravity), and are powerful candidates to test the theory of General Relativity on surface-based [18,19,20], subterranean [21] or in Space-based laboratories [22,23]. Projects are currently underway to verify the universality of free fall (UFF) [19,24,20,23,25,26,27], to detect gravitational waves in a frequency range yet unreachable with current laser-based detectors [28,29,30], and to test dark energy [31,32]. Nowadays, many efforts are devoted to designing compact, robust and mobile sensors [33,34].…”
Section: Introductionmentioning
confidence: 99%