Nanofiber Tesbed for Atom Interferometry On-Chip*

Guided atom interferometers are promising candidates for reaching SWAP requirements to realize fieldable atom interferometer sensors. An all-optical atom guide on membrane integrated photonics is a promising candidate for miniaturizing quantum accelerometers and gyroscopes with design flexibility and scalability. To study atomic coherence in an evanescent-field optical dipole trap (EF-ODT) and validate the feasibility of all-optical atom trap on chip, we performed Rabi and Ramsey measurements on the nanofiber testbed using a magic-wavelength trap for Cs atoms and tested an EF-ODT with new trap wavelengths chosen for alumina membrane integrated photonics. In addition, we will show our progress on membrane integrated photonics, such as sub-Doppler cooled membrane MOTs with efficient atom loading and high optical power handling capability in vacuum.