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Optimization and readout-noise analysis of a warm-vapor electromagnetically-induced-transparency memory on the Cs D₁ line

Esguerra Rodriguez, Luisa and Meßner, Leon and Robertson, Elizabeth and Ewald, Norman Vincenz and Gundogan, Mustafa and Wolters, Janik (2023) Optimization and readout-noise analysis of a warm-vapor electromagnetically-induced-transparency memory on the Cs D₁ line. Physical Review A, 107, 042607. American Physical Society. doi: 10.1103/PhysRevA.107.042607. ISSN 2469-9926.

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Official URL: https://link.aps.org/doi/10.1103/PhysRevA.107.042607

Abstract

Quantum memories promise to enable global quantum repeater networks. For field applications, alkali-metal vapors constitute an exceptional storage platform, as neither cryogenics, nor strong magnetic fields are required. We demonstrate a technologically simple, in principle satellite-suited quantum memory based on electromagnetically induced transparency on the cesium D1 line, and focus on the tradeoff between end-to-end efficiency and signal-to-noise ratio, both being key parameters in applications. For coherent pulses containing one photon on average, we achieve storage and retrieval with end-to-end efficiencies of eta_e2e = 13(2)%, which correspond o internal memory efficiencies of eta_mem = 33(1)%. Simultaneously, we achieve a noise level corresponding to µ1 = 0.07(2) signal photons. This noise is dominated by spontaneous Raman scattering, with contributions from fluorescence. Four-wave mixing noise is negligible, allowing for further minimization of the total noise level.

Item URL in elib:https://elib.dlr.de/202499/
Document Type:Article
Title:Optimization and readout-noise analysis of a warm-vapor electromagnetically-induced-transparency memory on the Cs D₁ line
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Esguerra Rodriguez, LuisaUNSPECIFIEDhttps://orcid.org/0009-0003-2647-6349152091436
Meßner, LeonUNSPECIFIEDhttps://orcid.org/0000-0002-4445-4712UNSPECIFIED
Robertson, ElizabethUNSPECIFIEDhttps://orcid.org/0000-0003-0856-5893UNSPECIFIED
Ewald, Norman VincenzUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gundogan, MustafaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wolters, JanikUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Date:12 April 2023
Journal or Publication Title:Physical Review A
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:107
DOI:10.1103/PhysRevA.107.042607
Page Range:042607
Publisher:American Physical Society
ISSN:2469-9926
Status:Published
Keywords:quantum memories, EIT, quantum technologies
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Communication, Navigation, Quantum Technology
DLR - Research area:Raumfahrt
DLR - Program:R KNQ - Communication, Navigation, Quantum Technology
DLR - Research theme (Project):R - Quantum information and communication
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Optical Sensor Systems > Terahertz and Laser Spectroscopy
Deposited By: Esguerra Rodriguez, Luisa
Deposited On:01 Feb 2024 07:48
Last Modified:06 Feb 2024 11:09

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