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Faraday rotation in a nanocell with smoothly variable thickness L of Rb atomic vapor column in the range 140-1700 nm has been obtained. Unusual behavior of Faraday rotation versus the ratio L/lambda (lambda = 780 nm) has been studied
We report a frequency measurement of the 4s21 S0-4S4p 3P1 transition in calcium performed for the first time with ultracold atoms. The density dependence of the transition frequency was determined and a dipole trap realized
The loss in coherence in a trapped-atoms "echo" experiment is suppressed by a different pulse sequence. The coherence time is then limited by mixing to other vibrational levels and the lifetime of the internal states
By comparison between experiment and theory, we show how the classical noise on a multi-state atom laser beam increases with increasing flux. Such considerations will be important in future precision measurement techniques utilising atom lasers
We report an experimental study of slow light diffraction from a resonant nonlinear grating in cold Rb atoms. Alternatively, the diffracted light can be viewed as generated from an EIT enhanced six-wave mixing process
We experimentally demonstrated phase-matching between optical waves propagating in the same direction and sound wave in the cell of Rb vapor. Phase-matching occurs when group velocity of light is equal to the sound speed
We investigated experimentally enhanced effects on slow light and superluminal propagation in cesium vapor with amplification without inversion (AWI). Theoretical explanations for the two cases are given
Under some conditions photoluminescence at the exciton resonance is emitted predominantly by an electron-hole plasma, under other conditions by excitons with exciton formation most efficient at intermediate densities and low temperatures
Two-color pulse-shaping technique is used to probe the relative phase between exciton and free carrier polarizations in four-wave mixing. It appears that the virtual excitation of excitons at free carrier energies is an important contribution
Theoretically and experimentally, we investigate temporal phase evolution during Rabi flopping on the A-exciton resonance in CdSe using a novel fast-scanning XFROG method and observe phase changes smaller than pi/2 compared to the slightly chirped input pulse
Spectral, temporal, and polarization resolved four-wave mixing measurements in a series of InGaAs heterostructures with varying well width reveal that mean-field Coulomb interactions between excitons are relatively insensitive to confinement
We calculate the homogeneous linewidth of an optically excited exciton due to exciton-exciton scattering. We include the exchange interaction, which dominates over direct scattering, and the softening of energy conservation due to the finite linewidth
Short, intense pulses of polarized THz radiation are used to drive Rabi oscillations between orbital states of electrons bound to shallow donors in GaAs. Polarization selective excitation is demonstrated
Coherent nonlinear propagation of ultrafast electric field transients through intersubband resonances of GaAs/AlGaAs quantum wells with high electron concentration shows that the strong radiative coupling between them dominates their linear and nonlinear optical properties
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