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Journal Articles Physical Review Letters Year : 2010

Entanglement of two individual neutral atoms using Rydberg blockade

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Abstract

We report the generation of entanglement between two individual $^{87}$Rb atoms in hyperfine ground states $|F=1,M=1>$ and $|F=2,M=2>$ which are held in two optical tweezers separated by 4 $\mu$m. Our scheme relies on the Rydberg blockade effect which prevents the simultaneous excitation of the two atoms to a Rydberg state. The entangled state is generated in about 200 ns using pulsed two-photon excitation. We quantify the entanglement by applying global Raman rotations on both atoms. We measure that 61% of the initial pairs of atoms are still present at the end of the entangling sequence. These pairs are in the target entangled state with a fidelity of 0.75.
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Dates and versions

hal-00508934 , version 1 (07-12-2015)

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Tatjana Wilk, Alpha Gaëtan, Charles Evellin, Janik Wolters, Yevhen Miroshnychenko, et al.. Entanglement of two individual neutral atoms using Rydberg blockade. Physical Review Letters, 2010, 104, pp.010502. ⟨10.1103/PhysRevLett.104.010502⟩. ⟨hal-00508934⟩
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