High data-rate atom interferometer for measuring acceleration

An atom interferometer for measuring loss of coherence from an atom mirror

We describe an atom interferometer to study the coherence of atoms reflected from an evanescent wave mirror. The interferometer is sensitive to the loss of phase coherence induced by the defects in the mirror. The results are consistent with and complementary to recent measurements of specular reflection. PACS. 03.75.Be Atom and neutron optics – 03.75.Dg Atom and neutron interferometry – 39.20....

High-resolution, high-speed, low data age uncertainty, heterodyne displacement measuring interferometer electronics

An advanced displacement measuring interferometer system has been developed to satisfy the needs of semiconductor manufacturing and lithography. The system electronics provides a position resolution of 0.31 nm at velocities up to 2.1 m s−1 when the system is used with a double-pass interferometer. Output data rates up to 107 samples per second are available. The data age, which is the delay fro...

Analysis of atom-interferometer clocks

We analyze the nature and performance of clocks formed by stabilizing an oscillator to the phase difference between two paths of an atom interferometer. The phase evolution has been modeled as being driven by the proper-time difference between the two paths, although it has an ambiguous origin in the nonrelativistic limit and it requires a full quantum-field-theory treatment in the general case...

An Antihydrogen Interferometer for Measuring Antimatter Gravity

The gravitational force on antimatter has never been directly measured, largely because electromagnetic forces overwhelm gravitational forces and no form of low-energy neutral antimatter has been available. However, the technology to make low-energy antihydrogen is currently being developed. We have designed an atomic interferometer that can measure the force of gravity on hydrogen or antihydro...

Straight macroscopic magnetic guide for cold atom interferometer