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Journal Articles Physical Review Letters Year : 2010

## Entanglement of two individual neutral atoms using Rydberg blockade

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Alpha Gaëtan
• Function : Author
• PersonId : 922931
Philippe Grangier
Antoine Browaeys
• Function : Author
• PersonId : 920984

#### 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.

#### Domains

Physics [physics] Quantum Physics [quant-ph]

### Dates and versions

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

### Identifiers

• HAL Id : hal-00508934 , version 1
• ARXIV :
• DOI :

### Cite

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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