Physikalisches Institut, Universität Heidelberg, 69120 Heidelberg, Germany.
Opt Lett. 2009 Nov 15;34(22):3463-5. doi: 10.1364/OL.34.003463.
Optical dipole traps and atom chips are two very powerful tools for the quantum manipulation of neutral atoms. We demonstrate that both methods can be combined by creating an optical lattice potential on an atom chip. A red-detuned laser beam is retroreflected using the atom chip surface as a high-quality mirror, generating a vertical array of purely optical oblate traps. We transfer thermal atoms from the chip into the lattice and observe cooling into the two-dimensional regime. Using a chip-generated Bose-Einstein condensate, we demonstrate coherent Bloch oscillations in the lattice.
光偶极阱和原子芯片是两种非常强大的中性原子量子操控工具。我们通过在原子芯片上创建光学晶格势来证明这两种方法可以结合使用。使用原子芯片表面作为高质量的反射镜，将一束红失谐激光反射，产生垂直排列的纯光学扁长形陷阱。我们将热原子从芯片转移到晶格中，并观察到冷却到二维状态。使用芯片产生的玻色-爱因斯坦凝聚态，我们演示了在晶格中的相干布洛赫振荡。
