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تسجيل مستخدم جديدQuantum Test of the Universality of Free Fall
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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 Eotvos ratio of $eta_{text{Rb,K}}=(0.3pm 5.4)times 10^{-7}$. We briefly estimate possible bias effects and present strategies for future improvements.
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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 we
ll as systematic effects affecting our measurement. Our determination of the Eotvos ratio yields $eta_{,text{Rb,K}}=-1.9times10^{-7}$ with a combined standard uncertainty of $sigma_eta=3.2times10^{-7}$.
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Einsteins theory of gravity, general relativity, has passed stringent tests in laboratories, elsewhere in the Solar Sytem, and in pulsar binaries. Nevertheless it is known to be incompatible with quantum mechanics and must differ from the true behavi
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