Atom waveguide and 1D optical lattice using a two-color evanescent light field around an optical micro/nano-fiber

Rajani Ayachitula

符建 Jian Fu, 殷响 Xiang Yin, 李宁远 Ningyuan Li +1 more

We propose a two-color scheme of atom waveguides and one-dimensional (1D) optical lattices using evanescent wave fields of different transverse modes around an optical micro/nano-fiber. The atom guide potential can be produced when the optical fiber carries a red-detuned light with TE01 mode and a blue-detuned light with HE11 mode, and the 1D optical lattice potential can be produced when the red-detuned light is transformed to the superposition of the TE01 mode and HE11 mode. The two trapping potentials can be transformed to each other for accurately controlling mode transformation for the red-detuned light. This might provide a new approach to realize flexible transition between the guiding and trapping states of atoms.

Haruhiko Ito, Keiji Sakaki, Takeshi Nakata +2 more

Jian Bo Fu, Xiang Yin, Limin Tong

We propose a two-colour scheme of atom guide and 1D optical lattice using evanescent light fields of TE 00 and TE 01 transverse modes in an optical waveguide. The optical waveguide carries red-detuned light and blue-detuned light, with both modes far from resonance. The atom guide and 1D optical lattice potentials can be transformed to each other by using a Mach–Zehnder interferometer to accurately control mode transformation. This might provide a new approach to realize flexible transition between the guiding and trapping states of atoms.

John Robert Burke, Sai-Tak Chu, Garnett W. Bryant +3 more

Summary form only given. Electromagnetic fields have been used extensively to manipulate and control atoms. Intersecting light beams are used to create standing waves that act as an optical lattice potential. Evanescent fields at a surface can be used as a mirror to reflect atoms scattering on the surface. Atoms can propagate inside a hollow core fiber provided that an evanescent surface field keeps the atoms away from the inner wall. These fields are used to move and locate atoms so that they can interact, interfere, and entangle. We have been examining the two color scheme with realistic integrated optical waveguide structures. In this presentation, we show that two-dimensional and three-dimensional trapping configurations can be achieved for real waveguide structures. We discuss the design features that must be addressed to implement optical structures for use in atom optics.

治彦 伊藤, HARUHIKO ITO