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We demonstrate the deterministic entanglement of two individually addressed neutral atoms using a Rydberg blockade mediated controlled-not gate. Parity oscillation measurements reveal a Bell state fidelity of F=0. 580. 04, which is above the entanglement threshold of F=0. 5, without any correction for atom loss, and F=0. 710. 05 after correcting for background collisional losses. The fidelity results are shown to be in good agreement with a detailed error model.
Zhang et al. (Wed,) studied this question.