Efficient multiparticle entanglement via asymmetric Rydberg blockade

Details Efficient multiparticle entanglement via asymmetric Rydberg blockade Efficient multiparticle entanglement via asymmetric Rydberg blockade

2008-12-12

arxiv.org/abs/0812.2425v1

Phys. Rev. Lett. 102, 240502 (2009)

Physics

Quantum Physics

3 figures

Scientific paper

10.1103/PhysRevLett.102.240502

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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