Atomic frequency comb memory in an isotopically pure 143Nd3+:Y7LiF4 crystal. (24th November 2015)

• Record Type: Journal Article
• Authors: Akhmedzhanov, R A; Gushchin, L A; Kalachev, A A; Korableva, S L; Sobgayda, D A; Zelensky, I V
• Is Part Of: Laser physics letters. Volume 13:Number 1(2016:Jan.)
• Publication Date: 2015-11-24
• Subjects: quantum memory -- atomic frequency comb -- inorganic crystals doped with rare earth metal ions; Lasers -- Periodicals; Physics -- Periodicals; 621.366
• DOI: 10.1088/1612-2011/13/1/015202
• Languages: English
• ISSNs: 1612-2011

Abstract

Abstract: We implemented the atomic frequency comb protocol for optical quantum memory in an isotopically pure crystal of Y 7 LiF4 doped by 143 Nd 3+ ions. Echo signals were observed on the 4 I9/2 (1)– 4 F3/2 (1) transition, which had inhomogeneous broadening much smaller than the hyperfine splitting of the ground and excited states. We performed hole-burning spectroscopy measurements on several transitions, obtaining information about the hyperfine state lifetimes. An intrinsic hole structure was found on some of the transitions, which allowed us to prepare a comb structure with two clearly defined periods and to observe echo pulses with different time delays.