On-chip quantum interference of a superconducting microsphere

@article{Pino2018OnchipQI,
  title={On-chip quantum interference of a superconducting microsphere},
  author={Hern{\'a}n Becerra Pino and Jordi Prat-Camps and Keka Sinha and B. Prasanna Venkatesh and Oriol Romero-Isart},
  journal={arXiv: Quantum Physics},
  year={2018},
  volume={3},
  pages={025001}
}
We propose and analyze an all-magnetic scheme to perform a Young's double slit experiment with a micron-sized superconducting sphere of mass $\gtrsim {10}^{13}$ amu. We show that its center of mass could be prepared in a spatial quantum superposition state with an extent of the order of half a micrometer. The scheme is based on magnetically levitating the sphere above a superconducting chip and letting it skate through a static magnetic potential landscape where it interacts for short intervals… 

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