Test of Equivalence Principle at<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>1</mml:mn><mml:msup><mml:mn>0</mml:mn><mml:mrow><mml:mo>−</mml:mo><mml:mn>8</mml:mn></mml:mrow></mml:msup></mml:math>Level by a Dual-Species Double-Diffraction Raman Atom Interferometer

Zhou, Lin; Long, Shitong; Tang, Biao; Chen, Xi; Gao, Fengjie; Peng, Wencui; Duan, Wei-Tao; Zhong, Jiaqi; Xiong, Zhuang; Wang, Jin; Zhang, Yuan‐Zhong; Zhan, Min

doi:10.1103/physrevlett.115.013004

Cited by 279 publications

(215 citation statements)

References 31 publications

(32 reference statements)

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“…After the first atom interferometry test by Fray et al 6,. several experiments have recently compared the free fall of different atoms: 85 Rb versus 87 Rb78 and 39 K versus 87 Rb9, the bosonic 88 Sr versus the fermionic 87 Sr10 and atoms in different spin orientations1011. The accuracy of these measurements, now in the 10 −7 to 10 −8 range, is expected to improve by several orders of magnitude in the near future owing to the rapid progress of atom-optical elements based on multiphoton momentum transfer1213 and of large-scale facilities providing a few seconds of free fall during the interferometer sequence1415.…”

mentioning

confidence: 99%

Quantum test of the equivalence principle for atoms in coherent superposition of internal energy states

Rosi¹,

D’Amico²,

Cacciapuoti³

et al. 2017

Nat Commun

196

175

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The Einstein equivalence principle (EEP) has a central role in the understanding of gravity and space–time. In its weak form, or weak equivalence principle (WEP), it directly implies equivalence between inertial and gravitational mass. Verifying this principle in a regime where the relevant properties of the test body must be described by quantum theory has profound implications. Here we report on a novel WEP test for atoms: a Bragg atom interferometer in a gravity gradiometer configuration compares the free fall of rubidium atoms prepared in two hyperfine states and in their coherent superposition. The use of the superposition state allows testing genuine quantum aspects of EEP with no classical analogue, which have remained completely unexplored so far. In addition, we measure the Eötvös ratio of atoms in two hyperfine levels with relative uncertainty in the low 10−9, improving previous results by almost two orders of magnitude.

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mentioning

confidence: 99%

Quantum test of the equivalence principle for atoms in coherent superposition of internal energy states

Rosi¹,

D’Amico²,

Cacciapuoti³

et al. 2017

Nat Commun

196

175

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show abstract

“…More recently, this mixture has been used in atom interferometry experiments where a second species can be used to remove common mode noise or test the weak equivalence principle [49][50][51][52][53][54].…”

Section: Mixtures Of 85 Rb-87 Rbmentioning

confidence: 99%

Species-selective confinement of atoms dressed with multiple radiofrequencies

Bentine

Harte

Luksch

et al. 2017

J. Phys. B: At. Mol. Opt. Phys.

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Abstract.Methods to manipulate the individual constituents of an ultracold quantum gas mixture are essential tools for a number of applications, for example the direct quantum simulation of impurity physics. We investigate a scheme in which species-selective control is achieved using magnetic potentials dressed with multiple radiofrequencies, exploiting the different Landé g F -factors of the constituent atomic species. We describe a mixture dressed with two frequencies, where atoms are confined in harmonic potentials with a controllable degree of overlap between the two atomic species. This is then extended to a four radiofrequency scheme in which a double well potential for one species is overlaid with a single well for the other. The discussion is framed with parameters that are suitable for a 85 Rb and 87 Rb mixture, but is readily generalised to other combinations.arXiv:1701.05819v1 [cond-mat.quant-gas]

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“…For instance, it is possible to measure the acceleration of gravity with an accuracy of 1 part per billion (ppb) [13], the rotation of the Earth with an accuracy better than 1 millidegree per hour [14,15], or to detect minute changes in gravity caused by mass displacements [16] or ocean tides [17]. 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].…”

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%

Inertial quantum sensors using light and matter

2016

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Abstract. The past few decades have seen dramatic progress in our ability to manipulate and coherently control matter-waves. Although the duality between particles and waves has been well tested since de Broglie introduced the matter-wave analog of the optical wavelength in 1924, manipulating atoms with a level of coherence that enables one to use these properties for precision measurements has only become possible with our ability to produce atomic samples exhibiting temperatures of only a few millionths of a degree above absolute zero. Since the initial experiments a few decades ago, the field of atom optics has developed in many ways, with both fundamental and applied significance. The exquisite control of matter waves offers the prospect of a new generation of force sensors exhibiting unprecedented sensitivity and accuracy, for applications from navigation and geophysics to tests of general relativity. Thanks to the latest developments in this field, the first commercial products using this quantum technology are now available. In the future, our ability to create large coherent ensembles of atoms will allow us an even more precise control of the matter-wave and the ability to create highly entangled states for non-classical atom interferometry.

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Test of Equivalence Principle at10−8Level by a Dual-Species Double-Diffraction Raman Atom Interferometer

Cited by 279 publications

References 31 publications

Quantum test of the equivalence principle for atoms in coherent superposition of internal energy states

Quantum test of the equivalence principle for atoms in coherent superposition of internal energy states

Species-selective confinement of atoms dressed with multiple radiofrequencies

Inertial quantum sensors using light and matter

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