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Demonstration of ground state cooling using microwaves

Demonstration of ground state cooling using microwaves

We have demonstrated ground state cooling of 9Be+ ions using microwave fields produced by a custom microwave "antenna" embedded into a surface-electrode ion trap. The viewgraph shows the suppression of the red (cooling) sideband which occurs close to the motional ground state, while the blue sideband exhibits a substantial contrast. Our next step will be to work towards an entangling two-qubit gate. We look forward to more exciting results using the embedded microwave antenna!

Author: jm