aqora

Cold Ytterbium Atomic Beam with Sub-Recoil Momentum Width

Toshiyuki Hosoya

Mar 1, 20230 citations

Cold Ytterbium Atomic Beam with Sub-Recoil Momentum Width

俊之細谷, Toshiyuki Hosoya

Mar 1, 20230 citations

Sub-recoil transverse momentum width in a cold ytterbium atomic beam

Toshiyuki Hosoya, Tomoya Sato, Ryotaro Inoue +1 more

We demonstrate the generation of a slow ytterbium atomic beam with a transverse momentum width of 0.44(6) times the photon recoil associated with Bragg diffraction, and a flux of 6.7 ( 9 ) × 10 6 atoms/s. This is achieved by applying momentum filtering through a long-lived metastable state to atoms prepared in a slow beam via two-dimensional transverse laser cooling. The resulting narrow momentum distribution enables efficient quasi-Bragg diffraction, which we exploit to realize a Bragg interferometer. These results mark a significant step toward continuous, high-precision, and magnetically insensitive angular rate measurements using cold alkaline-earth(-like) atomic beams.We demonstrate the generation of a slow ytterbium atomic beam with a transverse momentum width of 0.44(6) times the photon recoil associated with Bragg diffraction, and a flux of 6.7 ( 9 ) × 10 6 atoms/s. This is achieved by applying momentum filtering through a long-lived metastable state to atoms prepared in a slow beam via two-dimensional transverse laser cooling. The resulting narrow momentum distribution enables efficient quasi-Bragg diffraction, which we exploit to realize a Bragg interferometer. These results mark a significant step toward continuous, high-precision, and magnetically insensitive angular rate measurements using cold alkaline-earth(-like) atomic beams.

arXiv:2505.08250Physical Review ResearchSep 22, 20250 citations

Generating High-Power Bragg Pulses for Atom Interferometry

Andrew O. Neely, Zack Pagel, Weicheng Zhong +1 more

Bulletin of the American Physical SocietyJun 3, 20200 citations

Atom Interferometry with Coherent Enhancement of Bragg Pulse Sequences

A. Béguin, Tangui Rodzinka, L. Calmels +2 more

We report here on the realization of light-pulse atom interferometers with large-momentum-transfer atom optics based on a sequence of Bragg transitions. We demonstrate momentum splitting up to 200 photon recoils in an ultracold atom interferometer. We highlight a new mechanism of destructive interference of the losses leading to a sizable efficiency enhancement of the beam splitters. We perform a comprehensive study of parasitic interferometers due to the inherent multiport feature of the quasi-Bragg pulses. Finally, we experimentally verify the phase shift enhancement and characterize the interferometer visibility loss.We report here on the realization of light-pulse atom interferometers with large-momentum-transfer atom optics based on a sequence of Bragg transitions. We demonstrate momentum splitting up to 200 photon recoils in an ultracold atom interferometer. We highlight a new mechanism of destructive interference of the losses leading to a sizable efficiency enhancement of the beam splitters. We perform a comprehensive study of parasitic interferometers due to the inherent multiport feature of the quasi-Bragg pulses. Finally, we experimentally verify the phase shift enhancement and characterize the interferometer visibility loss.

arXiv:2305.09507Physical Review LettersOct 3, 202319 citations

Improved Accuracy of Atom Interferometry Using Bragg Diffraction

C. X. Yu, Brian Estey, Weicheng Zhong +2 more

CPT and Lorentz SymmetryJan 23, 20170 citations

Bragg interferometer using slow and continuous atomic beam with sub-recoil transverse momentum width

Related papers

Bragg interferometer using slow and continuous atomic beam with sub-recoil transverse momentum width

Related papers