Results 261 to 270 of about 397,923 (311)

Preparation of atomic sodium as a two-level atom

Optics Communications, 1974
Abstract A method of preparing atomic sodium so that it behaves, to a first approximation, as a simple two-level atom is presented. The procedure consists of a succession of optical pumpings by a c.w. dye laser of a thermal atomic beam of sodium.
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Optical Dipole Noise of Two-Level Atoms

Physical Review Letters, 1995
Optical noise in two-level atoms is of fundamental interest as it limits the accuracy of atomic clocks and the amount of squeezing that can be obtained in atomic systems. It also contributes to momentum diffusion in laser cooling experiments. In this work, we measure phase-dependent optical noise spectra for the radiation emitted by long-lived ...
, Bacon, , Zhao, , Wang, , Thomas
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The Pancharatnam phase of a two-level atom in the presence of another two-level atom in a cavity

Journal of Optics B: Quantum and Semiclassical Optics, 2003
In this paper we consider a Hamiltonian modelling a pair of two-level atoms within a perfect cavity for the case of a two-photon transition. Under the exact resonance condition and in the presence of both the Stark shift and phase shift an exact solution to the Schrodinger equation is obtained. Employing this solution gives an analytical expression for
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Emission Spectra of a Two-level Atom Under the Presence of Another Two-level Atom

Journal of Modern Optics, 1992
Abstract We investigate the spectrum of light emitted by a two-level atom interacting with another two-level atom inside an ideal cavity within the frame of generalized Jaynes-Cummings model. The influence of various ratios of the coupling constants of the atoms to the field on the spectrum of the emitted light is studied in detail for the case when ...
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Two-level atoms and solitons

Bulletin of the Russian Academy of Sciences: Physics, 2013
Integrable equations that produce a wide range of various solitons arising from interactions between two-level atoms with optical pulses are briefly reviewed.
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Quantum Entropy of a Nonlinear Two-level Atom with Atomic Motion

International Journal of Theoretical Physics, 2009
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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The damped driven two-level atom

Annals of Physics, 1969
Abstract Equations are derived for the time evolution of the reduced density operator for a driven two-level atom which is damped by its coupling to a (zero-temperature) bath. Explicit solutions are obtained for the case in which the driving field oscillates harmonically. The effect of field statistics is discussed.
B.R Mollow, M.M Miller
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The periodically kicked two-level atom

Physics Letters A, 1988
Abstract The Liouville equation for the two-level atom is solved exactly for the case of a periodic delta-dunction driving field.
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Driven two-level atom: A simplified derivation

Physical Review A, 1996
Muriel [Phys. Rev. A 50, 4286 (1994)] recently obtained an exact solution for the driven two-level atom without relaxation by means of complicated projection operator methods. Here we obtain his result in a much more concise way by using the Dyson expansion. \textcopyright{}1996 The American Physical Society.
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Quantum chaos of the two-level atom

Physics Letters A, 1984
Abstract The quantum theory of the two-level atom coupled to a single mode of the electromagnetic field is considered as a simple example of “quantum chaos”, defined as the quantum behavior of a dynamical system which is non-integrable in the classical limit.
R. Graham, M. Höhnerbach
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