Bulletin of the American Physical Society
APS April Meeting 2023
Volume 68, Number 6
Minneapolis, Minnesota (Apr 15-18)
Virtual (Apr 24-26); Time Zone: Central Time
Session B14: Precision Measurements for Gravity, Dark Matter, and Dark Energy
10:45 AM–12:33 PM,
Saturday, April 15, 2023
Room: Marquette V - 2nd Floor
Sponsoring
Unit:
GPMFC
Chair: William Snow, Indiana University Bloomington
Abstract: B14.00008 : Realization of a complete Stern-Gerlach interferometer: Towards a test of quantum gravity*
12:09 PM–12:21 PM
Presenter:
Ron Folman
(Ben-Gurion University of the Negev)
Author:
Ron Folman
(Ben-Gurion University of the Negev)
Collaboration:
Atom-Chip Group
The Stern-Gerlach effect, found a century ago, has become a paradigm of quantum mechanics. Unexpectedly, until recently, there has been little evidence that the original scheme with freely propagating atoms exposed to gradients from macroscopic magnets is a fully coherent quantum process. Several theoretical studies have explained why a Stern-Gerlach interferometer is a formidable challenge. Here, we provide a detailed account of the realization of a full-loop Stern-Gerlach interferometer for single atoms and use the acquired understanding to show how this setup may be used to realize an interferometer for macroscopic objects doped with a single spin. Such a realization would open the door to a new era of fundamental probes, including the realization of previously inaccessible tests at the interface of quantum mechanics and gravity.
*This project has been partly funded by the Israeli Science Foundation
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