Efficient multiparticle entanglement via asymmetric rydberg blockade

  • Saffman M
  • Mølmer K
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We present an efficient method for producing $N$ particle entangled states using Rydberg blockade interactions. Optical excitation of Rydberg states that interact weakly, yet have a strong coupling to a second control state is used to achieve state dependent qubit rotations in small ensembles. On the basis of quantitative calculations we predict that an N=8 Schr\"odinger cat state can be produced with a fidelity of 84% in cold Rb atoms.

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  • M. Saffman

  • K. Mølmer

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