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J D Callen - One of the best experts on this subject based on the ideXlab platform.

  • neoclassical toroidal viscosity and error Field penetration in tokamaksa
    Physics of Plasmas, 2008
    Co-Authors: A J Cole, C C Hegna, J D Callen
    Abstract:

    A model for Field error penetration is developed that includes nonresonant as well as the usual resonant Field error effects. The nonresonant components cause a neoclassical toroidal viscous torque that tries to keep the plasma rotating at a rate comparable to the ion diamagnetic frequency. The new theory is used to examine resonant error-Field penetration threshold scaling in ohmic tokamak plasmas. Compared to previous theoretical results, the plasma is found to be less susceptible to error-Field penetration and locking, by a factor that depends on the nonresonant error-Field Amplitude.

  • effect of neoclassical toroidal viscosity on error Field penetration thresholds in tokamak plasmas
    Physical Review Letters, 2007
    Co-Authors: A J Cole, C C Hegna, J D Callen
    Abstract:

    A model for Field-error penetration is developed that includes nonresonant as well as the usual resonant Field-error effects. The nonresonant components cause a neoclassical toroidal viscous torque that keeps the plasma rotating at a rate comparable to the ion diamagnetic frequency. The new theory is used to examine resonant error-Field penetration threshold scaling in Ohmic tokamak plasmas. Compared to previous theoretical results, we find the plasma is less susceptible to error-Field penetration and locking, by a factor that depends on the nonresonant error-Field Amplitude.

H J Carmichael - One of the best experts on this subject based on the ideXlab platform.

  • quantum state reduction and conditional time evolution of wave particle correlations in cavity qed
    Physical Review Letters, 2000
    Co-Authors: G T Foster, L A Orozco, H M Castrobeltran, H J Carmichael
    Abstract:

    We report measurements in cavity QED of a wave-particle correlation function which records the conditional time evolution of the Field of a fraction of a photon. Detection of a photon prepares a state of well-defined phase that evolves back to equilibrium via a damped vacuum Rabi oscillation. We record the regression of the Field Amplitude. The recorded correlation function is nonclassical and provides an efficiency independent path to the spectrum of squeezing. Nonclassicality is observed even when the intensity fluctuations are classical. PACS numbers: 42.50.Dv, 32.80. ‐ t, 42.50.Ct The seminal work of Hanbury-Brown and Twiss [1] marks the beginning of the systematic study of the quantum fluctuations of light. Two lines of experiments are notable: those measuring correlations between pairs of photodetections (particle aspect of light) [2‐6] and squeezing experiments which measure the variance of the electromagnetic Field Amplitude (wave aspect of light) [7‐9]. No attempt has been made previously to draw the particle and wave aspects together by correlating a photon detection with fluctuations of the electromagnetic Field Amplitude. We have done this, extending the ideas of Hanbury-Brown and Twiss to record the conditional time evolution of the Amplitude fluctuations of an electromagnetic wave. Measurements are made in the strong-coupling regime of cavity quantum electrodynamics (QED) [10] and exhibit the nonclassical fluctuations of light in a dramatic new way.

  • quantum state reduction and conditional time evolution of wave particle correlations in cavity qed
    Physical Review Letters, 2000
    Co-Authors: G T Foster, L A Orozco, H M Castrobeltran, H J Carmichael
    Abstract:

    We report measurements in cavity QED of a wave-particle correlation function which records the conditional time evolution of the Field of a fraction of a photon. Detection of a photon prepares a state of well-defined phase that evolves back to equilibrium via a damped vacuum Rabi oscillation. We record the regression of the Field Amplitude. The recorded correlation function is nonclassical and provides an efficiency independent path to the spectrum of squeezing. Nonclassicality is observed even when the intensity fluctuations are classical.

A J Cole - One of the best experts on this subject based on the ideXlab platform.

  • neoclassical toroidal viscosity and error Field penetration in tokamaksa
    Physics of Plasmas, 2008
    Co-Authors: A J Cole, C C Hegna, J D Callen
    Abstract:

    A model for Field error penetration is developed that includes nonresonant as well as the usual resonant Field error effects. The nonresonant components cause a neoclassical toroidal viscous torque that tries to keep the plasma rotating at a rate comparable to the ion diamagnetic frequency. The new theory is used to examine resonant error-Field penetration threshold scaling in ohmic tokamak plasmas. Compared to previous theoretical results, the plasma is found to be less susceptible to error-Field penetration and locking, by a factor that depends on the nonresonant error-Field Amplitude.

  • effect of neoclassical toroidal viscosity on error Field penetration thresholds in tokamak plasmas
    Physical Review Letters, 2007
    Co-Authors: A J Cole, C C Hegna, J D Callen
    Abstract:

    A model for Field-error penetration is developed that includes nonresonant as well as the usual resonant Field-error effects. The nonresonant components cause a neoclassical toroidal viscous torque that keeps the plasma rotating at a rate comparable to the ion diamagnetic frequency. The new theory is used to examine resonant error-Field penetration threshold scaling in Ohmic tokamak plasmas. Compared to previous theoretical results, we find the plasma is less susceptible to error-Field penetration and locking, by a factor that depends on the nonresonant error-Field Amplitude.

G T Foster - One of the best experts on this subject based on the ideXlab platform.

  • quantum state reduction and conditional time evolution of wave particle correlations in cavity qed
    Physical Review Letters, 2000
    Co-Authors: G T Foster, L A Orozco, H M Castrobeltran, H J Carmichael
    Abstract:

    We report measurements in cavity QED of a wave-particle correlation function which records the conditional time evolution of the Field of a fraction of a photon. Detection of a photon prepares a state of well-defined phase that evolves back to equilibrium via a damped vacuum Rabi oscillation. We record the regression of the Field Amplitude. The recorded correlation function is nonclassical and provides an efficiency independent path to the spectrum of squeezing. Nonclassicality is observed even when the intensity fluctuations are classical. PACS numbers: 42.50.Dv, 32.80. ‐ t, 42.50.Ct The seminal work of Hanbury-Brown and Twiss [1] marks the beginning of the systematic study of the quantum fluctuations of light. Two lines of experiments are notable: those measuring correlations between pairs of photodetections (particle aspect of light) [2‐6] and squeezing experiments which measure the variance of the electromagnetic Field Amplitude (wave aspect of light) [7‐9]. No attempt has been made previously to draw the particle and wave aspects together by correlating a photon detection with fluctuations of the electromagnetic Field Amplitude. We have done this, extending the ideas of Hanbury-Brown and Twiss to record the conditional time evolution of the Amplitude fluctuations of an electromagnetic wave. Measurements are made in the strong-coupling regime of cavity quantum electrodynamics (QED) [10] and exhibit the nonclassical fluctuations of light in a dramatic new way.

  • quantum state reduction and conditional time evolution of wave particle correlations in cavity qed
    Physical Review Letters, 2000
    Co-Authors: G T Foster, L A Orozco, H M Castrobeltran, H J Carmichael
    Abstract:

    We report measurements in cavity QED of a wave-particle correlation function which records the conditional time evolution of the Field of a fraction of a photon. Detection of a photon prepares a state of well-defined phase that evolves back to equilibrium via a damped vacuum Rabi oscillation. We record the regression of the Field Amplitude. The recorded correlation function is nonclassical and provides an efficiency independent path to the spectrum of squeezing. Nonclassicality is observed even when the intensity fluctuations are classical.

C C Hegna - One of the best experts on this subject based on the ideXlab platform.

  • neoclassical toroidal viscosity and error Field penetration in tokamaksa
    Physics of Plasmas, 2008
    Co-Authors: A J Cole, C C Hegna, J D Callen
    Abstract:

    A model for Field error penetration is developed that includes nonresonant as well as the usual resonant Field error effects. The nonresonant components cause a neoclassical toroidal viscous torque that tries to keep the plasma rotating at a rate comparable to the ion diamagnetic frequency. The new theory is used to examine resonant error-Field penetration threshold scaling in ohmic tokamak plasmas. Compared to previous theoretical results, the plasma is found to be less susceptible to error-Field penetration and locking, by a factor that depends on the nonresonant error-Field Amplitude.

  • effect of neoclassical toroidal viscosity on error Field penetration thresholds in tokamak plasmas
    Physical Review Letters, 2007
    Co-Authors: A J Cole, C C Hegna, J D Callen
    Abstract:

    A model for Field-error penetration is developed that includes nonresonant as well as the usual resonant Field-error effects. The nonresonant components cause a neoclassical toroidal viscous torque that keeps the plasma rotating at a rate comparable to the ion diamagnetic frequency. The new theory is used to examine resonant error-Field penetration threshold scaling in Ohmic tokamak plasmas. Compared to previous theoretical results, we find the plasma is less susceptible to error-Field penetration and locking, by a factor that depends on the nonresonant error-Field Amplitude.