Experimental Studies of Light Propagation and Storage in Warm Atomic Gases
نویسندگان
چکیده
We report on an experimental study of slow pulse propagation and polarization storage of light in an atomic vapour for pulse durations ranging from several μs to 100 μs, for non-zero magnetic fields, for temperatures ranging from 65 to 90 ◦C and for two different rubidium isotopes. The results confirm the presence of the electromagnetically induced transparency window as predicted by Lukin (1997 Phys. Rev. Lett. 79 2959). We show that time-dependent optical rotation can mask the storage of light signal, and demonstrate storage of light for the 85Rb isotope.
منابع مشابه
O ct 2 00 4 Experimental studies of light propagation and storage in warm atomic gases
We report on an experimental study of light pulse propagation and storage in a Rb atomic vapor for different pulse durations, magnetic fields, and atomic densities, and for two different isotopes. The results have been analyzed and compared with previous studies.
متن کاملQuantum Information Storage with Slow and Stopped Light
This essay describes the phenomena where the group velocity of light is reduced to ultraslow speeds, and even stopped in atomic gases. The coherent coupling of photons to atomic spin excitations in the gases through Electromagnetically Induced Transparency (EIT) is discussed, and experimental observation is presented as evidence of the phenomena with specific focus on the emergence of excited s...
متن کاملOptical Resonance Shifts in the Fluorescence of Thermal and Cold Atomic Gases.
We show that the resonance shifts in the fluorescence of a cold gas of rubidium atoms substantially differ from those of thermal atomic ensembles that obey the standard continuous medium electrodynamics. The analysis is based on large-scale microscopic numerical simulations and experimental measurements of the resonance shifts in a steady-state response in light propagation.
متن کاملEXPERIMENTAL INVESTIGATION OF THE POPULATION DENSITIES OF LOWEREXCITED STATES OF NEON
Many studies employing various methods have been carried out into the number densities of excited atoms in electrical discharges with inert gases [1,2,3], but the ranges of the discharge current and gas pressure is very limited in them all. In this work, the population densities of 3S, 3s' of neon have been investigated using the atomic absorption method. Since the discharge current and gas...
متن کاملOptimal control of light pulse storage and retrieval.
We demonstrate experimentally a procedure to obtain the maximum efficiency for the storage and retrieval of light pulses in atomic media. The procedure uses time-reversal to obtain optimal input signal pulse shapes. Experimental results in warm Rb vapor are in good agreement with theoretical predictions and demonstrate a substantial improvement of efficiency. This optimization procedure is appl...
متن کامل