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Issue 7, 2024
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Accepted articles
Reviews of topical problems


Optical quantum memory on atomic ensembles: physical principles, experiments and possibilities of application in a quantum repeater

 a,  a,  a,  a,  b, c,  d
a Kazan Quantum Center, Kazan National Research Technical University, K. Marx Str. 10, Kazan, 420111, Russian Federation
b Moscow Institute of Physics and Technology (National Research University), Institutskii per. 9, Dolgoprudny, Moscow Region, 141701, Russian Federation
c R&D Center JSC, Bolshoy Balkansky Lane 20, Moscow, 129090, Russian Federation
d Russian Academy of Sciences, China Branch of BRICS Institute of Future Networks, Shenzhen, China

We review protocols for atomic ensemble-based optical quantum memories and their experimental implementation. Our special focus is on quantum memories in rare-earth ions doped crystals with long optical and spin coherence lifetimes based on slow light and photon-echo. Current challenges and methods for obtaining high-performance quantum memory are outlined and critically analyzed. The strategies for improving optical quantum memory for application in optical quantum repeaters are discussed.

Keywords: optical quantum memory, two- and three-level atomic ensembles, optical and spin coherence, electromagnetically induced transparency, off-resonant Raman transition, Autler—Townes splitting, photon echo, crystals with rare earth ions, quantum repeater
DOI: 10.3367/UFNe.2024.06.039694
Citation: Moiseev S A, Minnegaliev M M, Gerasimov K I, Moiseev E S, Deev A D, Balega Yu Yu "Optical quantum memory on atomic ensembles: physical principles, experiments and possibilities of application in a quantum repeater" Phys. Usp., accepted

Received: 24th, April 2024, 10th, June 2024

Оригинал: Моисеев С А, Миннегалиев М М, Герасимов К И, Моисеев Е С, Деев А Д, Балега Ю Ю «Оптическая квантовая память на атомных ансамблях: физические принципы, эксперименты и возможности применения в квантовом повторителе» УФН, принята к публикации; DOI: 10.3367/UFNr.2024.06.039694

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