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Physics

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Displaying 2426 - 2450 of 2493

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

Nanofabrication of a Two-Dimensional Array Using Laser-Focused Atomic Deposition

September 4, 1995
Author(s)
R Gupta, Jabez J. McClelland, Zeina J. Kubarych, Robert Celotta
Fabrication of a two-dimensional array of nanometer-scale chromium features on a silicon substrate by laser-focused atomic deposition is described. Features 13plus or minus}1 nm high and having a full-width at half maximum of 80plus or minus}10 nm are

Experiments at NIST with Trapped Ions: 3-D Zero-Point Cooling, Quantum Gates, Bragg Scattering, and Atomic Clocks

June 12, 1995
Author(s)
C Monroe, A S. Barton, James C. Bergquist, D J. Berkeland, John Bollinger, F C. Cruz, Wayne M. Itano, Steven R. Jefferts, Branislav M. Jelenkovic, B E. King, D M. Meekhof, J D. Miller, M E. Poitzsch, Joseph N. Tan
We have recently used stimulated-Raman transitions in the resolved sideband regime to cool single ions to the n = 0 zero-point energy. This has allowed realizations of the Jaynes-Cummings model interaction for atomic motion and a quantum controlled-NOT
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