Manipulating atomic states via optical orbital angular-momentum |
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| Authors: | Xiong-jun Liu Xin Liu Leong-Chuan Kwek and Choo Hiap Oh |
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| Institution: | (1) Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore, 117542, Singapore;(2) Department of Physics, Texas A & M University, College Station, TX, 77843-4242, USA;(3) National Institute of Education, Nanyang Technological University, 1 Nanyang Walk, Singapore, 639798, Singapore |
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| Abstract: | Optical orbital angular-momentum (OAM) has more complex mechanics than the spin degree of photons, and may have a broad range
of application. Manipulating atomic states via OAM has become an interesting topic. In this paper, we first review the general
theory of generating adiabatic gauge field in ultracold atomic systems by coupling atoms to external optical fields with OAM,
and point out the applications of the generated adiabatic gauge field. Then, we review our work in this field, including the
generation of macroscopic superposition of vortex-antivortex states and spin Hall effect (SHE) in cold atoms.
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| Keywords: | orbital angular momentum adiabatic Gauge field vortex states spin Hall effect quantum state transfer ultracold atoms |
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