The Experts below are selected from a list of 27666 Experts worldwide ranked by ideXlab platform

Achim Peters - One of the best experts on this subject based on the ideXlab platform.

  • test of the isotropy of the speed of light using a continuously rotating Optical Resonator
    Physical Review Letters, 2005
    Co-Authors: Sven Herrmann, A Senger, Evgeny Kovalchuk, Holger Muller, Achim Peters
    Abstract:

    We report on a test of Lorentz invariance performed by comparing the resonance frequencies of one stationary Optical Resonator and one continuously rotating on a precision air bearing turntable. Special attention is paid to the control of rotation induced systematic effects. Within the photon sector of the standard model extension, we obtain improved limits on combinations of 8 parameters at a level of a few parts in 10{sup -16}. For the previously least well known parameter we find {kappa}-tilde{sub e-}{sup ZZ}=(-1.9{+-}5.2)x10{sup -15}. Within the Robertson-Mansouri-Sexl test theory, our measurement restricts the isotropy violation parameter {beta}-{delta}-(1/2) to (-2.1{+-}1.9)x10{sup -10}, corresponding to an eightfold improvement with respect to previous nonrotating measurements.

  • test of the isotropy of the speed of light using a continuously rotating Optical Resonator
    Physical Review Letters, 2005
    Co-Authors: Sven Herrmann, A Senger, Evgeny Kovalchuk, Holger Muller, Achim Peters
    Abstract:

    We report on a test of Lorentz invariance performed by comparing the resonance frequencies of one stationary Optical Resonator and one continuously rotating on a precision air bearing turntable. Special attention is paid to the control of rotation induced systematic effects. Within the photon sector of the standard model extension, we obtain improved limits on combinations of 8 parameters at a level of a few parts in ${10}^{\ensuremath{-}16}$. For the previously least well known parameter we find ${\stackrel{\texttildelow{}}{\ensuremath{\kappa}}}_{e\ensuremath{-}}^{ZZ}=(\ensuremath{-}1.9\ifmmode\pm\else\textpm\fi{}5.2)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}15}$. Within the Robertson-Mansouri-Sexl test theory, our measurement restricts the isotropy violation parameter $\ensuremath{\beta}\ensuremath{-}\ensuremath{\delta}\ensuremath{-}\frac{1}{2}$ to $(\ensuremath{-}2.1\ifmmode\pm\else\textpm\fi{}1.9)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}10}$, corresponding to an eightfold improvement with respect to previous nonrotating measurements.

Holger Muller - One of the best experts on this subject based on the ideXlab platform.

  • test of the isotropy of the speed of light using a continuously rotating Optical Resonator
    Physical Review Letters, 2005
    Co-Authors: Sven Herrmann, A Senger, Evgeny Kovalchuk, Holger Muller, Achim Peters
    Abstract:

    We report on a test of Lorentz invariance performed by comparing the resonance frequencies of one stationary Optical Resonator and one continuously rotating on a precision air bearing turntable. Special attention is paid to the control of rotation induced systematic effects. Within the photon sector of the standard model extension, we obtain improved limits on combinations of 8 parameters at a level of a few parts in 10{sup -16}. For the previously least well known parameter we find {kappa}-tilde{sub e-}{sup ZZ}=(-1.9{+-}5.2)x10{sup -15}. Within the Robertson-Mansouri-Sexl test theory, our measurement restricts the isotropy violation parameter {beta}-{delta}-(1/2) to (-2.1{+-}1.9)x10{sup -10}, corresponding to an eightfold improvement with respect to previous nonrotating measurements.

  • test of the isotropy of the speed of light using a continuously rotating Optical Resonator
    Physical Review Letters, 2005
    Co-Authors: Sven Herrmann, A Senger, Evgeny Kovalchuk, Holger Muller, Achim Peters
    Abstract:

    We report on a test of Lorentz invariance performed by comparing the resonance frequencies of one stationary Optical Resonator and one continuously rotating on a precision air bearing turntable. Special attention is paid to the control of rotation induced systematic effects. Within the photon sector of the standard model extension, we obtain improved limits on combinations of 8 parameters at a level of a few parts in ${10}^{\ensuremath{-}16}$. For the previously least well known parameter we find ${\stackrel{\texttildelow{}}{\ensuremath{\kappa}}}_{e\ensuremath{-}}^{ZZ}=(\ensuremath{-}1.9\ifmmode\pm\else\textpm\fi{}5.2)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}15}$. Within the Robertson-Mansouri-Sexl test theory, our measurement restricts the isotropy violation parameter $\ensuremath{\beta}\ensuremath{-}\ensuremath{\delta}\ensuremath{-}\frac{1}{2}$ to $(\ensuremath{-}2.1\ifmmode\pm\else\textpm\fi{}1.9)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}10}$, corresponding to an eightfold improvement with respect to previous nonrotating measurements.

Benjamin Canuel - One of the best experts on this subject based on the ideXlab platform.

  • a marginally stable Optical Resonator for enhanced atom interferometry
    Journal of Physics B, 2017
    Co-Authors: Isabelle Riou, Nicolas Mielec, Andrea Bertoldi, Benjamin Canuel, Arnaud Landragin, G Lefevre, Marco Prevedelli, Philippe Bouyer, R. Geiger
    Abstract:

    We propose a marginally stable Optical Resonator suitable for atom interferometry. The Resonator geometry is based on two flat mirrors at the focal planes of a lens that produces the large beam waist required to coherently manipulate cold atomic ensembles. Optical gains of about 100 are achievable using optics with part-per-thousand losses. The resulting power build-up will allow for enhanced coherent manipulation of the atomic wavepackets such as large separation beamsplitters. We study the effect of longitudinal misalignments and assess the robustness of the Resonator in terms of intensity and phase profiles of the intra-cavity field. We also study how to implement atom interferometry based on Large Momentum Transfer Bragg diffraction in such a cavity.

Sven Herrmann - One of the best experts on this subject based on the ideXlab platform.

  • test of the isotropy of the speed of light using a continuously rotating Optical Resonator
    Physical Review Letters, 2005
    Co-Authors: Sven Herrmann, A Senger, Evgeny Kovalchuk, Holger Muller, Achim Peters
    Abstract:

    We report on a test of Lorentz invariance performed by comparing the resonance frequencies of one stationary Optical Resonator and one continuously rotating on a precision air bearing turntable. Special attention is paid to the control of rotation induced systematic effects. Within the photon sector of the standard model extension, we obtain improved limits on combinations of 8 parameters at a level of a few parts in 10{sup -16}. For the previously least well known parameter we find {kappa}-tilde{sub e-}{sup ZZ}=(-1.9{+-}5.2)x10{sup -15}. Within the Robertson-Mansouri-Sexl test theory, our measurement restricts the isotropy violation parameter {beta}-{delta}-(1/2) to (-2.1{+-}1.9)x10{sup -10}, corresponding to an eightfold improvement with respect to previous nonrotating measurements.

  • test of the isotropy of the speed of light using a continuously rotating Optical Resonator
    Physical Review Letters, 2005
    Co-Authors: Sven Herrmann, A Senger, Evgeny Kovalchuk, Holger Muller, Achim Peters
    Abstract:

    We report on a test of Lorentz invariance performed by comparing the resonance frequencies of one stationary Optical Resonator and one continuously rotating on a precision air bearing turntable. Special attention is paid to the control of rotation induced systematic effects. Within the photon sector of the standard model extension, we obtain improved limits on combinations of 8 parameters at a level of a few parts in ${10}^{\ensuremath{-}16}$. For the previously least well known parameter we find ${\stackrel{\texttildelow{}}{\ensuremath{\kappa}}}_{e\ensuremath{-}}^{ZZ}=(\ensuremath{-}1.9\ifmmode\pm\else\textpm\fi{}5.2)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}15}$. Within the Robertson-Mansouri-Sexl test theory, our measurement restricts the isotropy violation parameter $\ensuremath{\beta}\ensuremath{-}\ensuremath{\delta}\ensuremath{-}\frac{1}{2}$ to $(\ensuremath{-}2.1\ifmmode\pm\else\textpm\fi{}1.9)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}10}$, corresponding to an eightfold improvement with respect to previous nonrotating measurements.

M J Holland - One of the best experts on this subject based on the ideXlab platform.

  • supercooling of atoms in an Optical Resonator
    Physical Review Letters, 2016
    Co-Authors: Simon B Jager, S Schutz, J Cooper, Giovanna Morigi, M J Holland
    Abstract:

    We investigate laser cooling of an ensemble of atoms in an Optical cavity. We demonstrate that when atomic dipoles are synchronized in the regime of steady-state superradiance, the motion of the atoms may be subject to a giant frictional force leading to potentially very low temperatures. The ultimate temperature limits are determined by a modified atomic linewidth, which can be orders of magnitude smaller than the cavity linewidth. The cooling rate is enhanced by the superradiant emission into the cavity mode allowing reasonable cooling rates even for dipolar transitions with ultranarrow linewidth.