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Bose--Einstein Condensation: A new state of matter
Bose--Einstein Condensation: A new state of matter

Class 3
Class 3

BEC: many weakly interacting particles Gross
BEC: many weakly interacting particles Gross

... interprets images as of a continuous density distribution, but density distribution actually os made up discrete quanta of mass known, (in my subdiscipline of physics) as “atoms”.. Hard to see an individual atom, but can see effects of the discrete nature. ...
Polarization spectra of excited-state-Mg(3p)--rare-gas
Polarization spectra of excited-state-Mg(3p)--rare-gas

14-2 Kinetic Theory
14-2 Kinetic Theory

... 3, but that is incorrect. Because the ideal gas law involves T, not , we must use temperatures in Kelvin rather than Celsius. In Kelvin, the temperature rises from 283K to 303K. Finding the ratio of the final pressure to the initial pressure shows that pressure increases by a factor of 1.07: ...
Inserting Two Atoms into a Single Optical Micropotential
Inserting Two Atoms into a Single Optical Micropotential

... Then, the standing wave pattern of the VDT is axially shifted upwards and atom 1 moves in the positive z direction by about 3wHDT , see Fig. 2(a). At this separation, the HDT exerts negligible forces on atom 1. Atom 2 can now be transported to any position along the HDT with respect to the VDT even ...
Excitation of Rydberg states in rubidium with near infrared diode lasers
Excitation of Rydberg states in rubidium with near infrared diode lasers

Nature 425, (937
Nature 425, (937

Rydberg assisted light shift imbalance induced blockade in an atomic ensemble ,
Rydberg assisted light shift imbalance induced blockade in an atomic ensemble ,

80, 030202(R) (2009)
80, 030202(R) (2009)

Atomic Landau-Zener Tunneling and Wannier
Atomic Landau-Zener Tunneling and Wannier

properties of helium–neon lasers - UCSB Physics
properties of helium–neon lasers - UCSB Physics

Student Study Guide
Student Study Guide

... A laser is a device that controls the way that energized atoms release photons. Although there are many types of lasers, all have certain essential features. In a laser, the lasing medium is “pumped” to get the atoms into an excited state. Typically, very intense flashes of light or ...
Lasers and lenses - University of Toronto
Lasers and lenses - University of Toronto

Paper
Paper

Interaction-induced Lipkin-Meshkov-Glick model in a Bose
Interaction-induced Lipkin-Meshkov-Glick model in a Bose

Subwavelength transportation of light with atomic resonances
Subwavelength transportation of light with atomic resonances

... lengths but the same lattice spacing. The “carrier wave” periodicity remains the same for the different lengths of the chain. Generally, the resonance energy levels form a discrete set for a finite chain of atoms. The spacing between the levels becomes smaller as the length is increased. It is easie ...
Light-shift imbalance induced blockade of collective excitations beyond the lowest order
Light-shift imbalance induced blockade of collective excitations beyond the lowest order

pdf
pdf

1362571102_A.R. UNDRE - Diabeticfootsocietyofindia.org
1362571102_A.R. UNDRE - Diabeticfootsocietyofindia.org

A Further Look at Waveguide Lasers
A Further Look at Waveguide Lasers

... theoretical), based on a novel approach1 to the quantum electrodynamical (QED) interaction between the matter systems (atoms or molecules) and the coherent laser e.m. field. The peculiarity of this approach, which has just been successfully applied in other matter systems such as He [5], lies in its ...
Optical cooling of interacting atoms in a tightly confined trap
Optical cooling of interacting atoms in a tightly confined trap

Quantum Rabi Oscillation A Direct Test of Field Quantization in a
Quantum Rabi Oscillation A Direct Test of Field Quantization in a

Nonlinear Quantum Optics in a Waveguide: Distinct Single Photons Strongly
Nonlinear Quantum Optics in a Waveguide: Distinct Single Photons Strongly

Production of coherent radiation by atoms and molecules
Production of coherent radiation by atoms and molecules

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Population inversion

In science, specifically statistical mechanics, a population inversion occurs while a system (such as a group of atoms or molecules) exists in a state with more members in an excited state than in lower energy states. It is called an ""inversion"" because in many familiar and commonly encountered physical systems, this is not possible. The concept is of fundamental importance in laser science because the production of a population inversion is a necessary step in the workings of a standard laser.
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