Density dependent resonant light scattering

We present a single-scattering formalism for incoherent resonant light scattering by dilute quantum gas systems such as the atomic-trap Bose-Einstein condensates. We show that resonant scattering gives access to more information than the dynamical structure factor, familiar from non-resonant scattering. In particular, we show that the detuning dependence of the incoherent scattering cross-section allows the direct determination of the BEC pairing density $< ψψ>$ , which is a broken symmetry and provides evidence that the condensate is not in a good number state.We present a single-scattering formalism for incoherent resonant light scattering by dilute quantum gas systems such as the atomic-trap Bose-Einstein condensates. We show that resonant scattering gives access to more information than the dynamical structure factor, familiar from non-resonant scattering. In particular, we show that the detuning dependence of the incoherent scattering cross-section allows the direct determination of the BEC pairing density $< ψψ>$, which is a broken symmetry and provides evidence that the condensate is not in a good number state.

arXiv:cond-mat/9707321APS April Meeting AbstractsJul 30, 19970 citations

A theory of resonant light scattering

Robin M. Hochstrasser, Frank A. Novak

Chemical Physics LettersAug 1, 197616 citations

Near-resonance light scattering from a high-density ultracold atomic 87 Rb gas

Salim Balik, Aye Win, Mark D. Havey +2 more

We report a combined experimental and theoretical investigation of near-resonance light scattering from a high-density and ultracold atomic ${}^{87}$ Rb gas. The atomic sample, having a peak density $\ensuremath{\sim}$$5\ifmmode\times\else\texttimes\fi{}{10}^{13}$ atoms/cm ${}^{3}$ , temperature $\ensuremath{\sim}$65 $\ensuremath{\mu}$K, and initially prepared in the $F=1$ lower-energy ${}^{87}$ Rb hyperfine component, is optically pumped to the higher-energy $F=2$ hyperfine level. Measurements are made of the transient hyperfine pumping process and of the time evolution of scattering of near-resonance probe radiation on the $F=2\ensuremath{\rightarrow}{F}^{\ensuremath{'}}=3$ transition. Features of the density, detuning, and temporal dependence of the signals are attributed to the high density and consequent large optical depth of the samples.We report a combined experimental and theoretical investigation of near-resonance light scattering from a high-density and ultracold atomic ${}^{87}$Rb gas. The atomic sample, having a peak density $\ensuremath{\sim}$$5\ifmmode\times\else\texttimes\fi{}{10}^{13}$ atoms/cm${}^{3}$, temperature $\ensuremath{\sim}$65 $\ensuremath{\mu}$K, and initially prepared in the $F=1$ lower-energy ${}^{87}$Rb hyperfine component, is optically pumped to the higher-energy $F=2$ hyperfine level. Measurements are made of the transient hyperfine pumping process and of the time evolution of scattering of near-resonance probe radiation on the $F=2\ensuremath{\rightarrow}{F}^{\ensuremath{'}}=3$ transition. Features of the density, detuning, and temporal dependence of the signals are attributed to the high density and consequent large optical depth of the samples.

arXiv:0909.1133Physical Review AMay 13, 201378 citations

< ψψ>

, which is a broken symmetry and provides evidence that the condensate is not in a good number state.

We report a combined experimental and theoretical investigation of near-resonance light scattering from a high-density and ultracold atomic

{}^{87}

Rb gas. The atomic sample, having a peak density $\ensuremath{\sim}$$5\ifmmode\times\else\texttimes\fi{}{10}^{13}$ atoms/cm

{}^{3}

, temperature $\ensuremath{\sim}$65 $\ensuremath{\mu}$K, and initially prepared in the

F=1

lower-energy

{}^{87}

Rb hyperfine component, is optically pumped to the higher-energy

F=2

hyperfine level. Measurements are made of the transient hyperfine pumping process and of the time evolution of scattering of near-resonance probe radiation on the $F=2\ensuremath{\rightarrow}{F}^{\ensuremath{'}}=3$ transition. Features of the density, detuning, and temporal dependence of the signals are attributed to the high density and consequent large optical depth of the samples.