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Published February 25, 2000 | public
Journal Article

The Atom-Cavity Microscope: Single Atoms Bound in Orbit by Single Photons

Abstract

The motion of individual cesium atoms trapped inside an optical resonator is revealed with the atom-cavity microscope (ACM). A single atom moving within the resonator generates large variations in the transmission of a weak probe laser, which are recorded in real time. An inversion algorithm then allows individual atom trajectories to be reconstructed from the record of cavity transmission and reveals single atoms bound in orbit by the mechanical forces associated with single photons. In these initial experiments, the ACM yields 2-micrometer spatial resolution in a 10-microsecond time interval. Over the duration of the observation, the sensitivity is near the standard quantum limit for sensing the motion of a cesium atom.

Additional Information

© 2000 American Association for the Advancement of Science. 25 October 1999; accepted 18 January 2000. We gratefully acknowledge the contributions of K. Birnbaum, M. S. Chapman, H. Mabuchi, J. Ye, and S. Tan to the current research. This work is supported by the NSF, by the Office of Naval Research, by the Defense Advanced Research Projects Agency via the Quantum Information and Computation Institute administered by Army Research Office, and by Hewlett-Packard Research Labs. Work at the University of Auckland is supported by the Marsden Fund of the Royal Society of New Zealand.

Additional details

Created:
August 19, 2023
Modified:
October 18, 2023