摘要: The basic physical principles behind atom interferometers based on optical pulses of light are summarized. This method interferometry is measurements in the time and frequency domain an inherently precise measurement technique. After a brief discussion some important technical requirements for good fringe accuracy visibility, we describe interferometer that has measured acceleration due to gravity with resolution better than one part 10 . We project absolute our will be order few parts 9 also experiment measures recoil energy shift when it absorbs photon. When combined value Rydberg constant mass ratios M Cs /m p m e , can obtain α, fine structure constant. Currently, have experimental Δα/α ∼ -8 after two hours integration studying systematic effects affect measurement.
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