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Kapitza Trap for Ultracold Atoms
Physical Review Letters, 2023We report on the experimental realization of a Kapitza trap for ultracold atoms. Using time-periodic attractive and repulsive Gaussian potentials, we create an effective trap for ultracold neutral atoms in a regime where the time average of the potential is equal to zero.
Jian Jiang +6 more
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Optical Society of America Annual Meeting, 1991
Atomic hydrogen has been loaded into a 1-K deep magnetic trap through the use of a dilution refrigerator. Evaporative cooling has been used to cool the trapped hydrogen into the submillikelvin temperature regime. These techniques have produced a sample with density of 8 × 1013 cm-3 at a temperature of 100 μK.
J. C. Sandberg +5 more
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Atomic hydrogen has been loaded into a 1-K deep magnetic trap through the use of a dilution refrigerator. Evaporative cooling has been used to cool the trapped hydrogen into the submillikelvin temperature regime. These techniques have produced a sample with density of 8 × 1013 cm-3 at a temperature of 100 μK.
J. C. Sandberg +5 more
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Atom traps compared with ion traps
Physica Scripta, 1995Traps for neutral atoms are briefly surveyed and compared with ion traps. Motivations for trapping atoms and ions are discussed. Fundamental restrictions on atom trap design and ways to circumvent them are presented. Methods for cooling trapped atoms and ions are compared and contrasted and differences in their low-temperature collective and ...
David E Pritchard, Michael P Bradley
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ACS Nano, 2015
Engineering of supramolecular assemblies on surfaces is an emerging field of research impacting chemistry, electronics, and biology. Among supramolecular assemblies, metal-containing structures provide rich properties and enable robust nanostructured designs. In this issue of ACS Nano, Feng et al.
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Engineering of supramolecular assemblies on surfaces is an emerging field of research impacting chemistry, electronics, and biology. Among supramolecular assemblies, metal-containing structures provide rich properties and enable robust nanostructured designs. In this issue of ACS Nano, Feng et al.
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Cooling, Stopping, and Trapping Atoms
Science, 1988Significant advances have been made in the ability to control the motion of neutral atoms. Cooling and trapping atoms present new possibilities for studies of ultracold atoms and atomic interactions. The techniques of laser cooling and deceleration of atomic beams, magnetic and laser trapping of neutral atoms, and a number of recent advances in the use
W D, Phillips, P L, Gould, P D, Lett
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Evaporative Cooling of Trapped Atoms
1996Publisher Summary This chapter focuses on the concept of evaporative cooling of trapped neutral atoms. The recent observations of Bose–Einstein condensation have shown dramatically the potential of evaporative cooling. Through evaporative cooling, phase-space density could be increased by six orders of magnitude in these experiments.
Ketterle, W., van Druten, N.J.
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1989
The rapid development of techniques for cooling and trapping atoms using laser light has created a new subfield of atomic physics. Research opportunities include the study of matter at ultra low temperature, ultra precise atomic spectroscopy and the study of light-matter interaction in a new quantum regime.
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The rapid development of techniques for cooling and trapping atoms using laser light has created a new subfield of atomic physics. Research opportunities include the study of matter at ultra low temperature, ultra precise atomic spectroscopy and the study of light-matter interaction in a new quantum regime.
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The Journal of Chemical Physics, 1973
The trapping of gas atoms on collision with a solid surface is described using the soft cube model. Fraction trapped is defined as that fraction of an incident flux which has a normal energy less than the gas surface potential well depth, after a single collision with the surface. Sticking coefficient is synonymous with fraction trapped. The functional
Ashok T. Modak, Patrick J. Pagni
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The trapping of gas atoms on collision with a solid surface is described using the soft cube model. Fraction trapped is defined as that fraction of an incident flux which has a normal energy less than the gas surface potential well depth, after a single collision with the surface. Sticking coefficient is synonymous with fraction trapped. The functional
Ashok T. Modak, Patrick J. Pagni
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2003 European Quantum Electronics Conference. EQEC 2003 (IEEE Cat No.03TH8665), 2003
In the experiment, single Rubidium-87 atoms are loaded out of a molasses of Doppler-cooled atoms into the focus of a Gaussian laser beam created by a single mode laser diode with a wavelength of 856 nm. A confocal microscope outside our vacuum chamber is used to focus the trapping beam to a minimal waist of 3.5 /spl mu/m (thus creating a trap depth of ...
J. Volz +5 more
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In the experiment, single Rubidium-87 atoms are loaded out of a molasses of Doppler-cooled atoms into the focus of a Gaussian laser beam created by a single mode laser diode with a wavelength of 856 nm. A confocal microscope outside our vacuum chamber is used to focus the trapping beam to a minimal waist of 3.5 /spl mu/m (thus creating a trap depth of ...
J. Volz +5 more
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Superradiance of trapped atoms
Journal of Russian Laser Research, 2006A new method for calculating the total power of the spontaneous emission of a few motionless two-level atoms located at a distance of the order of the resonance-radiation wavelength with dipole-dipole interaction is suggested. The method is based on the Schrodinger representation.
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