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

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

2012-02-29

arxiv.org/abs/1202.6446v1

Physics

Quantum Physics

5 pages, 5 figures

Scientific paper

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.

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