We perform Electromagnetically Induced Transparency (EIT)-based storage in metastable helium at room temperature. An additional phase shift is shown to be imposed to the retrieved pulse when we detune the coupling and probe beams from the center of the Doppler profile. © 2014 Optical Society of America.

Rupamanjari Ghosh

SNU Management

Maynard M.-A.

Bouchez R.

Brion E.

Labidi T.

Mukhtar M.

Kumar S.

Bretenaker F.

Goldfarb F.

<p>Shiv Nadar University is a comprehensive, multidisciplinary, research-focused, and student-centric University offering a full range of academic programs at the undergraduate, postgraduate and doctoral level. With state-of-the-art infrastructure, the University comprises of academic wings, sophisticated labs, international standard sports facilities, amphitheaters, auditorium, conference rooms and smart classrooms. The University&rsquo;s goal is to become internationally recognized for the quality of its research and creative endeavors and their applicability to improving quality of life, generating new insights and expanding the boundaries of human knowledge creativity. Committed to excellence in teaching, research and service, the University aims to serve the higher education needs of India and the world beyond.</p>

Shiv Nadar University

Frontiers in Optics, FiO 2014

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.

Fulltext

Observation and measurement of an extra phase shift created by optically detuned light storage in metastable helium

Laser & Photonics Reviews

Electromagnetically induced transparency-based slow and stored light in warm atoms

Nature Photonics

Optical quantum memory

Physical Review A

Photon storage inΛ-type optically dense atomic media. II. Free-space model

Extra phase shift created by optically detuned light storage in metastable helium