Realization of a complete Stern-Gerlach interferometer: Toward a test of quantum gravity

Yair Margalit, Or Dobkowski, Zhifan Zhou, Omer Amit, Yonathan Japha, Samuel Moukouri, Daniel Rohrlich, Anupam Mazumdar, Sougato Bose, Carsten Henkel, Ron Folman

Research output: Contribution to journalArticlepeer-review

50 Scopus citations


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.

Original languageEnglish
Article numbereabg2879
JournalScience advances
Issue number22
StatePublished - 1 May 2021

ASJC Scopus subject areas

  • General


Dive into the research topics of 'Realization of a complete Stern-Gerlach interferometer: Toward a test of quantum gravity'. Together they form a unique fingerprint.

Cite this