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Physics

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Displaying 2501 - 2525 of 2574

Minimization of ion micromotion in a Paul trap

January 1, 1998
Author(s)
D J. Berkeland, J D. Miller, James C. Bergquist, Wayne M. Itano, David J. Wineland
Micromotion of ions in Paul traps has several adverse effects, including alterations of atomic transition line shapes, significatn second-order Doppler shifts in high-accuracy studies and limited confinement time in the absence of cooling. The ac electric

Physics Laboratory - Technical Activities 1997

January 1, 1998
Author(s)
K B. Gebbie, William R. Ott
This report summarizes research projects, measurement method developments, calibration and testing services, and data evaluation activities that were carried out during calendar year 1997 in the NIST Physics Laboratory. These activities are in the areas of

Atomic Physics in Ion Traps

March 1, 1997
Author(s)
C Monroe, John Bollinger
Ion traps allow researchers to control the position and movement of charged particles with exquisite precision, and provide a powerful way to study many atomic phenomena.

Optimal Frequency Measurements with Maximally Correlated States

December 1, 1996
Author(s)
John J. Bollinger, Wayne M. Itano, David J. Wineland, D J. Heinzen
We show how maximally correlated states of N two-level particles can be used in spectroscopy to yield a frequency uncertainty equal to (NT)-1, where T is the time of a single measurement. From the time-energy uncertainty relation we show that this is the
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