Suppression of dark-state polariton collapses in a cold-atom quantum memory

被引：0

作者：

Gosar K. ^{[1
,2
]}

Jevšenak V.P. ^{[1
,2
]}

MeŽnaršič T. ^{[1
,2
]}

Beguš S. ^{[3
]}

Krehlik T. ^{[4
]}

Ponikvar D. ^{[1
,2
]}

Zupanič E. ^{[1
,5
]}

Jeglič P. ^{[1
,2
]}

机构：

[1] JoŽef Stefan Institute, Jamova 39, Ljubljana

[2] Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 19, Ljubljana

[3] Faculty of Electrical Engineering, University of Ljubljana, TrŽaška Cesta 25, Ljubljana

[4] Photonics Department, Jagiellonian University, Łojasiewicza 11, Kraków

[5] Faculty of Natural Sciences and Engineering, University of Ljubljana, Aškerčeva Cesta 12, Ljubljana

来源：

Physical Review A | 2023年 / 108卷 / 03期

关键词：

Compendex;

D O I：

10.1103/PhysRevA.108.032618

中图分类号：

学科分类号：

摘要：

We observe dark-state polariton collapses and revivals in a quantum memory based on electromagnetically induced transparency on a cloud of cold cesium atoms in a magnetic field. Using σ+-polarized signal and control beams in the direction of the magnetic field, we suppress the dark-state polariton collapses by polarizing the atoms towards one of the stretched Zeeman states and optimizing the frequency detuning of the control beam. In this way, we demonstrate a quantum memory with only partial dark-state polariton collapses, making the memory usable at any storage time, not only at discretized times of revivals. We obtain a storage time of more than 400 μs, which is ten times longer than what we can achieve by trying to annul the magnetic field. © 2023 American Physical Society.

引用

共 29 条

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