Realization of a fractional period adiabatic superlattice

  title={Realization of a fractional period adiabatic superlattice},
  author={R. Anderson and D. Trypogeorgos and A. Vald'es-Curiel and Q.-Y. Liang and J. Tao and M. Zhao and T. Andrijauskas and G. Juzeliūnas and I. Spielman},
  journal={arXiv: Quantum Gases},
  • R. Anderson, D. Trypogeorgos, +6 authors I. Spielman
  • Published 2020
  • Physics
  • arXiv: Quantum Gases
  • We propose and realize a deeply sub-wavelength optical lattice for ultracold neutral atoms using $N$ resonantly Raman-coupled internal degrees of freedom. Although counter-propagating lasers with wavelength $\lambda$ provided two-photon Raman coupling, the resultant lattice-period was $\lambda/2N$, an $N$-fold reduction as compared to the conventional $\lambda/2$ lattice period. We experimentally demonstrated this lattice built from the three $F=1$ Zeeman states of a $^{87}{\rm Rb}$ Bose… CONTINUE READING
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