Momentum filtering through a long-lived metastable state yields a continuous 30 m/s 171Yb beam with sub-recoil transverse momentum width (0.44(6) photon recoil) and 6.7(9)x10^6 atoms/s, enabling quasi-Bragg diffraction and a Mach-Zehnder interferometer.
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Sub-Recoil Transverse Momentum Width in a Cold Ytterbium Atomic Beam
Momentum filtering through a long-lived metastable state yields a continuous 30 m/s 171Yb beam with sub-recoil transverse momentum width (0.44(6) photon recoil) and 6.7(9)x10^6 atoms/s, enabling quasi-Bragg diffraction and a Mach-Zehnder interferometer.