A single-photon large-momentum-transfer atom interferometry scheme for Sr or Yb atoms with application to determining the fine-structure constant

Jesse S. Schelfhout, Thomas M. Hird, Kenneth M. Hughes +1

The leading experimental determinations of the fine-structure constant, $\hat{I}\pm$, currently rely on atomic photon-recoil measurements from Ramsey-Bordé atom interferometry with large…