Results 261 to 270 of about 3,745,024 (299)
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Planar Paul traps and trap arrays
Optical Society of America Annual Meeting, 1992We report the laser cooling and trapping of barium ions in a novel planar Paul trap. Unlike other rf quadrupole traps, the electrodes of a planar Paul trap are confined to one or more parallel planes. They may therefore be constructed on a micrometer scale by the same photolithographic techniques used for semiconductor devices.
R. G. Devoe, R. G. Brewer
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Ionic crystals in a linear Paul trap
Physical Review A, 1992We describe a configuration for a linear Paul rf ion trap. This trap can store a long string of ions with a small second-order Doppler shift, comparable to that achieved with a single ion in a quadrupole Paul trap. Crystallized strings of trapped ions, as well as more complicated structures, have been observed in the trap.
, Raizen +4 more
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Nanoscale Paul Trapping of a Single Electron
Nano Letters, 2006We demonstrate that a Paul trap made up of four conducting nanotubes is capable of trapping a single electron. In addition to the size, the major differences between such a nano-trap and its macroscopic analogue are that the electron is treated as a quantum object and that its effect ("back reaction") on the trapping device cannot be ignored.
Dvira, Segal, Moshe, Shapiro
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Dynamics of ion clouds in Paul traps
Physical Review A, 1988Velocity distribution and spatial distribution of ion clouds in Paul traps have been investigated both theoretically and experimentally. The kinetic energy and the width of the spatial distribution have been measured as function of the trap parameters.
, Siemers +3 more
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Physical Review Letters, 1991
Summary: Quasienergy eigenstates are constructed for a quantum harmonic oscillator with a periodic, time-dependent ``spring constant.'' This is done by a sequence of canonical transformations. The wave function in the new variables is that of an ordinary oscillator.
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Summary: Quasienergy eigenstates are constructed for a quantum harmonic oscillator with a periodic, time-dependent ``spring constant.'' This is done by a sequence of canonical transformations. The wave function in the new variables is that of an ordinary oscillator.
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Wigner functions in the Paul trap
Quantum and Semiclassical Optics: Journal of the European Optical Society Part B, 1995The authors review the theory of the harmonic oscillator with time-dependent frequency by means of an approach based on an operator constant of the motion. With the help of this operator constant we define the ground state, the excited states and a coherent state of the oscillator and discuss the time dependence of these states through their Wigner ...
G Schrade +3 more
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Micrometeors and the Paul trap
International Journal of Mass Spectrometry, 1999Abstract In the late 1950’s, a Paul trap was investigated as a way to electrically charge micron size iron particles, for a laboratory micrometeor simulator. Particles could be charged but not high enough. The alternating quadrupole electric field was found to form stable arrays of charged particles, inside the trap, which could be resonantly excited.
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1995
Abstract In order to understand the operation of the Paul trap, it is convenient to start by considering the ion motion in a two-dimensional quadrupole field, examine its implications, and then extend the consideration to a threedimensional quadrupole field which is the basic configuration for the Paul trap.
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Abstract In order to understand the operation of the Paul trap, it is convenient to start by considering the ion motion in a two-dimensional quadrupole field, examine its implications, and then extend the consideration to a threedimensional quadrupole field which is the basic configuration for the Paul trap.
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Laser spectroscopy in a Paul trap
SPIE Proceedings, 2000The present paper is devoted to the recent spectroscopic studies of the atomic structure with the use of a Paul trap. Selected results of the experiments performed with the method of the optical-rf double-resonance for europium ion and the preliminary results of preparation towards the study of another rare earth element - praseodymium - are compiled.
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