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Proceedings Paper

Electromagnetically induced transparency in solid-state atomic ensembles (Conference Presentation)
Author(s): Elizabeth Goldschmidt; Haoquan Fan; Kumel Kagalwala; Alan Migdall

Paper Abstract

We study Lambda-type electromagnetically induced transparency (EIT) in cryogenically-cooled, europium and praseodymium doped yttrium orthosilicate (Eu:YSO and Pr:YSO). We use spectral hole burning techniques to vary the optical inhomogeneous width of the sub-ensemble of atoms participating in the EIT. The effect of inhomogeneous broadening has been studied in the context of Doppler broadened gases, but less so in solids where motional effects are absent and the coherence is not limited by the transit of atoms through the optical field. Rare earth doped crystals, like many solid-state systems, exhibit spectral hole burning in which a narrowband laser field optically pumps atoms to states in the ground manifold that are dark with respect to the applied field, opening up a transparency window that persists after the pumping laser is shuttered. More complex sequences of fields at multiple frequencies can create arbitrary spectral profiles, within bounds set by the particular energy level structure of the atoms. For both Eu:YSO and Pr:YSO, there are three hyperfine ground states and three hyperfine excited states (at zero magnetic field) and all nine transitions are dipole-allowed with varying transition strengths. We use spectral hole-burning techniques to prepare a sub-ensemble of atoms in a particular frequency class and a particular ground spin state, while also pumping atoms out of another ground state to create a Lambda system. We observe the same functional dependence of the EIT width on the optical inhomogeneous width and independently calibrated control field Rabi frequency in both systems.

Paper Details

Date Published: 6 November 2018
Proc. SPIE 10771, Quantum Communications and Quantum Imaging XVI, 107710G (6 November 2018); doi: 10.1117/12.2319678
Show Author Affiliations
Elizabeth Goldschmidt, U.S. Army Research Lab. (United States)
Joint Quantum Institute (United States)
Haoquan Fan, Joint Quantum Institute (United States)
U.S. Army Research Lab. (United States)
Kumel Kagalwala, Joint Quantum Institute (United States)
Alan Migdall, Joint Quantum Institute (United States)
National Institute of Standards and Technology (United States)

Published in SPIE Proceedings Vol. 10771:
Quantum Communications and Quantum Imaging XVI
Ronald E. Meyers; Yanhua Shih; Keith S. Deacon, Editor(s)

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