Quantum test of the Universality of Free Fall using rubidium and potassium

Abstract

We report on an improved test of the Universality of Free Fall using a rubidium-potassium dual-species matter wave interferometer. We describe our apparatus and detail challenges and solutions relevant when operating a potassium interferometer, as well as systematic effects affecting our measurement. Our determination of the Eötvös ratio yields ${\eta }_{\text{Rb,K}}=-1.9\times 10^{-7}$ with a combined standard uncertainty of ${\sigma }_{\eta }=3.2\times 10^{-7}$.

References in corpus (21)

• Measurement of the fine-structure constant as a test of the Standard Model
• Test of the Equivalence Principle Using a Rotating Torsion Balance
• Precision Measurement of the Newtonian Gravitational Constant Using Cold Atoms
• New determination of the fine structure constant and test of the quantum electrodynamics
• Interferometry with Bose-Einstein Condensates in Microgravity
• Testing General Relativity with Atom Interferometry
• Matter-gravity couplings and Lorentz violation
• Quantum Test of the Universality of Free Fall
• Test of Equivalence Principle at $10^{-8}$ Level by a Dual-species Double-diffraction Raman Atom Interferometer
• Interference-filter-stabilized external-cavity diode lasers
• Matter wave lensing to picokelvin temperatures
• Dual Matter-Wave Inertial Sensors in Weightlessness
• General Relativistic Effects in Atom Interferometry
• Absolute airborne gravimetry with a cold atom sensor
• Comparison between two mobile absolute gravimeters: optical versus atomic interferometers
• Testing the universality of free fall with rubidium and ytterbium in a very large baseline atom interferometer
• Off-resonant Raman transitions impact in an atom interferometer
• Noise-Immune Conjugate Large-Area Atom Interferometers
• Narrow bandwidth interference filter-stabilized diode laser systems for the manipulation of neutral atoms
• All optical cooling of ${}^{39}$K to Bose Einstein condensation
• Generation of high-purity, low-temperature samples of ${}^{39}$K for applications in metrology

Cited by in corpus (18)

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• Massive quantum systems as interfaces of quantum mechanics and gravity
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• Testing the Universality of Free Fall using correlated ${}^{39}$K -- ${}^{87}$Rb interferometers
• Resolution of the Co-Location Problem in Satellite Quantum Tests of the Universality of Free Fall
• Interacting quantum mixtures for precision atom interferometry
• All-Optical Matter-Wave Lens using Time-Averaged Potentials
• Scattering Times of Quantum Particles from the Gravitational Potential, and Equivalence Principle Violation
• On free fall of quantum matter
• A high-flux source system for matter-wave interferometry exploiting tunable interactions
• Matter-wave collimation to picokelvin energies with scattering length and potential shape control
• Rapid generation of all-optical ${}^{39}$K Bose-Einstein condensates using a low-field Feshbach resonance
• Quantum Clocks, Gravitational Time Dilation, and Quantum Interference
• Free-fall non-universality in quantum theory
• Constraining the spin-gravity coupling effects to the $10^{-10}$-level with dual-species atom interferometers
• Second-Order Moment Quantum Fluctuations and Quantum Equivalence Principle
• Field Quantisations in Schwarzschild Spacetime: Theory versus Low-Energy Experiments
• Quantum Physics in Space