Abstract
We report the generation of entanglement between two individual atoms in hyperfine ground states and which are held in two optical tweezers separated by . 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.
- Received 5 August 2009
DOI:https://doi.org/10.1103/PhysRevLett.104.010502
©2010 American Physical Society
Synopsis
Opening the gate to quantum computation
Published 19 January 2010
The demonstration of entanglement between two neutral atoms would be a key step toward using them for quantum computation.
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