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arXiv · 0812.2425

Efficient multiparticle entanglement via asymmetric Rydberg blockade

M. Saffman·K. Molmer
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Abstract

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. Molmer. 2008-12-12. Efficient multiparticle entanglement via asymmetric Rydberg blockade. https://doi.org/10.1103/physrevlett.102.240502

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