Unconditional preparation of entanglement between atoms in cascaded optical cavities.

@article{Clark2003UnconditionalPO,
  title={Unconditional preparation of entanglement between atoms in cascaded optical cavities.},
  author={Stephen Clark and Amy Peng and Mile Gu and Scott Parkins},
  journal={Physical review letters},
  year={2003},
  volume={91 17},
  pages={177901}
}
We propose a scheme to unconditionally entangle the internal states of atoms trapped in separate high-finesse optical cavities. The scheme uses the technique of quantum reservoir engineering in a cascaded cavity-QED setting, and for ideal (lossless) coupling between the cavities generates an entangled pure state. Highly entangled states are also shown to be possible for realizable cavity-QED parameters and with nonideal coupling. 

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