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Precision AC-Stark measurement and a novel type of quantum gate

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8 Author(s)
Haffner, H. ; Institut fur Exp., Innsbruck Univ., Austria ; Gulde, S. ; Riebe, M. ; Lancaster, G.P.T.
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Relative AC-Stark shift of the S12/ and D52/ qubit levels in a single 40Ca+-ion is measured. A Ramsey type interferometric technique is used, where the ion is first brought into a superposition of the two qubit levels with a π/2 laser pulse, then apply the laser pulse whose influence on the relative phase evolution, and then recombine the two states with a second π/2-pulse. With this method measurement of AC-Stark shifts of less than 30 Hz in 30 s total measurement time is achieved.

Published in:

Quantum Electronics Conference, 2003. EQEC '03. European

Date of Conference:

22-27 June 2003