Abstract

We demonstrate coherent storage and retrieval of pulsed light using the atomic frequency comb protocol in a room temperature alkali vapor. We utilize velocity-selective optical pumping to prepare multiple velocity classes in the $F = 4$ hyperfine ground state of cesium. The frequency spacing of the classes is chosen to coincide with the $F^\prime = 4 - F^\prime = 5$ hyperfine splitting of the ${6^2}{{\rm P}_{3/2}}$ excited state, resulting in a broadband periodic absorbing structure consisting of two usually Doppler-broadened optical transitions. Weak coherent states of duration $2\;{\rm ns} $ are mapped into this atomic frequency comb with pre-programmed recall times of $8\;{\rm ns} $ and $12\;{\rm ns} $, with multi-temporal mode storage and recall demonstrated. Utilizing two transitions in the comb leads to an additional interference effect upon rephasing that enhances the recall efficiency.

© 2021 Optical Society of America

Gigahertz-bandwidth optical memory in Pr³⁺:Y₂SiO₅

M. Nicolle, J. N. Becker, C. Weinzetl, I. A. Walmsley, and P. M. Ledingham
Opt. Lett. 46(12) 2948-2951 (2021)

Storage of orbital angular momenta of light via coherent population oscillation

A. J. F. de Almeida, S. Barreiro, W. S. Martins, R. A. de Oliveira, D. Felinto, L. Pruvost, and J. W. R. Tabosa
Opt. Lett. 40(11) 2545-2548 (2015)

Storage of fiber-guided light in a nanofiber-trapped ensemble of cold atoms

C. Sayrin, C. Clausen, B. Albrecht, P. Schneeweiss, and A. Rauschenbeutel
Optica 2(4) 353-356 (2015)

Photon echoes using atomic frequency combs in Pr:YSO — experiment and semiclassical theory

Aditya N. Sharma, Zachary H. Levine, Martin A. Ritter, Kumel H. Kagalwala, Eli J. Weissler, Elizabeth A. Goldschmidt, and Alan L. Migdall
Opt. Express 31(3) 4899-4919 (2023)

Multifunctional on-chip storage at telecommunication wavelength for quantum networks

Ioana Craiciu, Mi Lei, Jake Rochman, John G. Bartholomew, and Andrei Faraon
Optica 8(1) 114-121 (2021)