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Observation and measurement of an extra phase shift created by optically detuned light storage in metastable helium
Maynard M.-A., Labidi T., Mukhtar M., Kumar S., Bretenaker F., Goldfarb F.,
Published in Institute of Physics Publishing
Volume: 105
Issue: 4
Electromagnetically induced transparency (EIT) in metastable helium at room temperature is experimentally shown to exhibit light storage capabilities for intermediate values of the detuning between the coupling and probe beams and the center of the atomic Doppler profiles. An additional phase shift is shown to be imposed to the retrieved pulse of light when the EIT protocol is performed at non-zero optical detunings. The value of this phase shift is measured for different optical detunings between 0 and 2 GHz, and its origin is discussed. © Copyright EPLA, 2014.
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Published in Institute of Physics Publishing
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