Light scattering from a dense and ultracold atomic gas

Sokolov, I. M.; Kupriyanova, Mariia; Kupriyanov, D. V.; Havey, M. D.

doi:10.1103/physreva.79.053405

Cited by 56 publications

(91 citation statements)

References 23 publications

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“…As the computational difficulty increases rapidly with the number of atoms the atomic density is chosen not very big n = 0.05 which corresponds to the mean free path of photon l ph = 1.63. However, as it was shown in [32] the collective effects caused by dipole-dipole interaction play a significant role for such density.…”

Section: A Angular Distribution Of Scattered Lightmentioning

confidence: 99%

“…This matrix describes the multiple photon exchange among atoms and it depends both on the spatial location of atoms and on the frequency of probe light (see [26], [32]). The vector b…”

Section: Basic Assumptions and Approachmentioning

confidence: 99%

“…The real part of dielectric permittivity of dense atomic ensemble can be negative in some spectral area [30]- [32].…”

Section: Introductionmentioning

confidence: 99%

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Reflection of resonant light from a plane surface of an ensemble of motionless point scatters: Quantum microscopic approach

Kuraptsev

Sokolov

2015

Phys. Rev. A

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On the basis of general theoretical results developed previously in [JETP 112, 246 (2011)], we analyze the reflection of quasi-resonant light from a plane surface of dense and disordered ensemble of motionless point scatters. Angle distribution of the scattered light is calculated both for sand p-polarizations of the probe radiation. The ratio between coherent and incoherent (diffuse) components of scattered light is calculated. We analyze the contributions of scatters located at different distances from the surface and determine on this background the thickness of surface layer responsible for reflected beam generation. The inhomogeneity of dipole-dipole interaction near the surface is discussed. We study also dependence of total reflected light power on the incidence angle and compare the results of microscopic approach with predictions of Fresnel reflection theory. The calculations are performed for different densities of scatters and different frequencies of a probe radiation.

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Section: A Angular Distribution Of Scattered Lightmentioning

confidence: 99%

“…This matrix describes the multiple photon exchange among atoms and it depends both on the spatial location of atoms and on the frequency of probe light (see [26], [32]). The vector b…”

Section: Basic Assumptions and Approachmentioning

confidence: 99%

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Reflection of resonant light from a plane surface of an ensemble of motionless point scatters: Quantum microscopic approach

Kuraptsev

Sokolov

2015

Phys. Rev. A

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“…Often continuous density distributions have been assumed which allow for analytical expressions to be obtained. The role of fluctuations of the atomic density is however by itself at the origin of interesting phenomena, such as Anderson localisation of light (2,3). In a series of theoretical and experimental studies, we have recently addressed the question of the quasi-resonant interaction of light with clouds of cold atoms, bridging the gap from single atom behavior, effects dominated by disorder to a mean field regime, where a continuous density distribution is the relevant description.…”

Section: Introductionmentioning

confidence: 99%

Cooperative scattering by cold atoms

Bux¹,

Lucioni²,

Bender³

et al. 2010

Journal of Modern Optics

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We have studied the interplay between disorder and cooperative scattering for single scattering limit in the presence of a driving laser. Analytical results have been derived and we have observed cooperative scattering effects in a variety of experiments, ranging from thermal atoms in an optical dipole trap, atoms released from a dark MOT and atoms in a BEC, consistent with our theoretical predictions.

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“…Light-matter interactions in dense regime is a very dynamic and challenging field of research [4][5][6] where one of the long standing problem is the understanding of the role of cooperative effects (superradiance [7,8], subradiance [9], collective Lamb shift [10]) and disorder (weak [11] and strong localization [12]). In order to reach this regime, a dipole trap can be used to compress the cloud to high densities where the strong localization phase transition [12] is expected to occur at a threshold given by the Ioffe-Reggel criterion [13] k · l ∼ 1, where k = 2π/λ is the light wavevector and l = 1/(nσ) is the mean free path (n the atomic density, σ the scattering cross section).…”

Section: Introductionmentioning

confidence: 99%

Fast compression of a cold atomic cloud using a blue-detuned crossed dipole trap

et al. 2012

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We present the experimental realization of a compressible blue detuned crossed dipole trap for cold atoms allowing for fast dynamical compression (∼ 5 − 10 ms) of 5 × 10 7 Rubidium atoms up to densities of ∼ 10 13 cm −3 . The dipole trap consists of two intersecting tubes of blue-detuned laser light. These tubes are formed using a single, rapidly rotating laser beam which, for sufficiently fast rotation frequencies, can be accurately described by a quasi-static potential. The atomic cloud is compressed by dynamically reducing the trap volume leading to densities close to the Ioffe-Reggel criterion for light localization.

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Light scattering from a dense and ultracold atomic gas

Cited by 56 publications

References 23 publications

Reflection of resonant light from a plane surface of an ensemble of motionless point scatters: Quantum microscopic approach

Reflection of resonant light from a plane surface of an ensemble of motionless point scatters: Quantum microscopic approach

Cooperative scattering by cold atoms

Fast compression of a cold atomic cloud using a blue-detuned crossed dipole trap

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