Control of Wannier orbitals for generating entanglement of ultracold atoms in an optical lattice

  • Inaba K
  • Tokunaga Y
  • Tamaki K
 et al. 
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Abstract

We propose a method for controlling the quantum state of ultracold atoms in an optical lattice by using current atom manipulation techniques, which can generate high-fidelity entanglement resources. We utilize higher Wannier orbitals as a controllable and accessible environment, and then realize a tunable Ising interaction between atoms in the lowest orbital to generate multipartite entangled cluster states. We can enhance the fidelity by employing a post-selection scheme based on spectroscopic measurements of states in the environment. Precise numerical simulations using realistic parameters suggest that our method offers significant advantages for high-fidelity entanglement generation toward scalable measurement-based quantum computation.

Author-supplied keywords

  • 03
  • 10
  • 37
  • 67
  • 71
  • bg
  • cluster state generation
  • fd
  • jk
  • lx
  • measurement based quantum computation
  • optical lattice
  • pacs

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Authors

  • Kensuke Inaba

  • Yuuki Tokunaga

  • Kiyoshi Tamaki

  • Kazuhiro Igeta

  • Makoto Yamashita

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