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Slow and fast single photons from a quantum dot interacting with the excited state hyperfine structure of the Cesium D1-line

Kroh, Tim and Wolters, Janik and Ahlrichs, Andreas and Schell, Andreas W. and Thoma, Alexander and Reitzenstein, Stephan and Wildmann, Johannes S. and Zallo, Eugenio and Trotta, Rinaldo and Rastelli, Armando and Schmidt, Oliver G. and Benson, Oliver (2019) Slow and fast single photons from a quantum dot interacting with the excited state hyperfine structure of the Cesium D1-line. Scientific Reports, 9 (13728). Nature Publishing Group. doi: 10.1038/s41598-019-50062-x. ISSN 2045-2322.

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Official URL: http://dx.doi.org/10.1038/s41598-019-50062-x

Abstract

Hybrid interfaces between distinct quantum systems play a major role in the implementation of quantum networks. Quantum states have to be stored in memories to synchronize the photon arrival times for entanglement swapping by projective measurements in quantum repeaters or for entanglement purification. Here, we analyze the distortion of a single-photon wave packet propagating through a dispersive and absorptive medium with high spectral resolution. Single photons are generated from a single In(Ga)As quantum dot with its excitonic transition precisely set relative to the Cesium D1 transition. The delay of spectral components of the single-photon wave packet with almost Fourier-limited width is investigated in detail with a 200 MHz narrow-band monolithic Fabry-Pérot resonator. Reflecting the excited state hyperfine structure of Cesium, “slow light” and “fast light” behavior is observed. As a step towards room-temperature alkali vapor memories, quantum dot photons are delayed for 5 ns by strong dispersion between the two 1.17 GHz hyperfine-split excited state transitions. Based on optical pumping on the hyperfine-split ground states, we propose a simple, all-optically controllable delay for synchronization of heralded narrow-band photons in a quantum network.

Item URL in elib:https://elib.dlr.de/132988/
Document Type:Article
Title:Slow and fast single photons from a quantum dot interacting with the excited state hyperfine structure of the Cesium D1-line
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Kroh, TimUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wolters, JanikUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ahlrichs, AndreasUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schell, Andreas W.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Thoma, AlexanderUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Reitzenstein, StephanUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wildmann, Johannes S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zallo, EugenioUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Trotta, RinaldoUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rastelli, ArmandoUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schmidt, Oliver G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Benson, OliverUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Date:5 September 2019
Journal or Publication Title:Scientific Reports
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:9
DOI:10.1038/s41598-019-50062-x
Publisher:Nature Publishing Group
ISSN:2045-2322
Status:Published
Keywords:slow light, single photons, quantum dots, atomic vapor cells
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space System Technology
DLR - Research area:Raumfahrt
DLR - Program:R SY - Space System Technology
DLR - Research theme (Project):R - Detectors for optical instruments (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Optical Sensor Systems > Terahertz and Laser Spectroscopy
Deposited By: Wolters, Janik
Deposited On:27 Oct 2020 08:21
Last Modified:18 Dec 2020 15:40

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