Atom beam splitters based on Raman transitions in continous light waves

Eugeny Korsunsky, Yu. B. Ovchinnikov

Yu. B. Ovchinnikov, Eugeny Korsunsky

Eugeny Korsunsky, Yu. B. Ovchinnikov

Lele Chen, Ke Zhang, Yaoyao Xu +4 more

An atom interferometer based on Doppler-insensitive Raman transition is proposed, which has sharply peaked interference fringes for multi-wave interference. We show that two sets of counter-propagating Doppler-insensitive Raman beam pairs can be used to construct a new type of multi-wave beam splitter, which can be used to construct an atom interferometer. Although the spacing between adjacent diffraction orders of the interferometer is small, they can be distinguished by the internal state of the atom. Our analysis shows that the width of the fringes of this atom interferometer is inversely proportional to the width (duration) of the beam splitter and the Rabi frequency of the Raman beams, that is, the interferometer can achieve high resolution at high light intensity and long pulse width.

Xu-Dong Liu, Zongyou Chen, Weichun Huang +3 more

Multidimensional beamsplitters play crucial roles in the development of multidimensional atom interferometers and have the potential for applications in quantum information in higher dimensions. We present different configurations of multidimensional beamsplitters using both conventional two-photon Raman transitions and recently discovered four-photon Raman transitions. The differences between these configurations arise from the selection of external magnetic fields to serve as quantization axes. We explored and estimated statistical and systematic errors that may occur when multiple Raman transitions are used to construct multidimensional atom interferometers with deviated quantization axes. Our results demonstrated a tradeoff between the simplicity of axis alignment relative to the beams and the required optical power. These considerations are pertinent to the future design and optimization of multidimensional atom interferometry systems.

M. K. Olsen, Seok Jin Choi, Howard M. Wiseman +2 more