Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Point source atom interferometry with a cloud of finite size



Gregory W. Hoth, Bruno M. Pelle, Stefan Riedl, John E. Kitching, Elizabeth A. Donley


We demonstrate a two axis gyroscope by use of light pulse atom interferometry with an expanding cloud of atoms in the regime where the cloud has expanded by 1.1 to 5 times its initial size during the interrogation. Rotations are measured by analyzing spatial fringe patterns in the atom population obtained by imaging the final cloud. The fringes arise from a correlation between an atom's initial velocity and its final position. This correlation is naturally created by the expansion of the cloud, but it also depends on the initial atomic distribution. We show the frequency and contrast of these fringes depend on the details of the initial distribution and develop an analytical model to explain this dependence. We estimate that an optimized system based on this technique could achieve navigation grade performance with an active evacuated volume $
Applied Physics Letters


atom interferometer, compact sensor, gyroscope, inertial navigation, scale factor


Hoth, G. , Pelle, B. , Riedl, S. , Kitching, J. and Donley, E. (2016), Point source atom interferometry with a cloud of finite size, Applied Physics Letters (Accessed May 19, 2024)


If you have any questions about this publication or are having problems accessing it, please contact

Created August 19, 2016, Updated February 19, 2017