期刊
PHYSICAL REVIEW LETTERS
卷 104, 期 1, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.104.010502
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资金
- EU
- DGA
- IFRAF
We report the generation of entanglement between two individual (87)Rb atoms in hyperfine ground states vertical bar F = 1, M = 1 > and vertical bar 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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