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Gigahertz-bandwidth optical memory in Pr3+:Y2SiO5

Gigahertz-bandwidth optical memory in Pr3+:Y2SiO5
Gigahertz-bandwidth optical memory in Pr3+:Y2SiO5
We experimentally study a broadband implementation of the atomic frequency comb (AFC) rephasing protocol with a cryogenically cooled Pr3+:Y2SiO5 crystal. To allow for storage of broadband pulses, we explore a novel, to the best of our knowledge, regime where the input photonic bandwidth closely matches the inhomogeneous broadening of the material (∼5GHz), thereby significantly exceeding the hyperfine ground and excited state splitting (∼10MHz). Through an investigation of different AFC preparation parameters, we measure a maximum efficiency of 10% after a rephasing time of 12.5 ns. With a suboptimal AFC, we witness up to 12 rephased temporal modes.
0146-9592
2948-2951
Ledingham, Patrick
8db45fde-00d8-421a-93d6-7f18ac835c28
Ledingham, Patrick
8db45fde-00d8-421a-93d6-7f18ac835c28

Ledingham, Patrick (2021) Gigahertz-bandwidth optical memory in Pr3+:Y2SiO5. Optics Letters, 46 (12), 2948-2951. (doi:10.1364/OL.423642).

Record type: Article

Abstract

We experimentally study a broadband implementation of the atomic frequency comb (AFC) rephasing protocol with a cryogenically cooled Pr3+:Y2SiO5 crystal. To allow for storage of broadband pulses, we explore a novel, to the best of our knowledge, regime where the input photonic bandwidth closely matches the inhomogeneous broadening of the material (∼5GHz), thereby significantly exceeding the hyperfine ground and excited state splitting (∼10MHz). Through an investigation of different AFC preparation parameters, we measure a maximum efficiency of 10% after a rephasing time of 12.5 ns. With a suboptimal AFC, we witness up to 12 rephased temporal modes.

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Accepted/In Press date: 13 April 2021
Published date: 15 June 2021

Identifiers

Local EPrints ID: 449842
URI: http://eprints.soton.ac.uk/id/eprint/449842
ISSN: 0146-9592
PURE UUID: dbbcbaec-dcee-4b28-9375-c95ad5579efa

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Date deposited: 21 Jun 2021 16:31
Last modified: 21 Jun 2021 16:31

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