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Ultrabright and narrowband intra-fiber biphoton source at ultralow pump power

Bruns, Alexander ; Hsu, Chia-Yu ; Stryzhenko, Sergiy ; Giese, Enno ; Yatsenko, Leonid P. ; Yu, Ite A. ; Halfmann, Thomas ; Peters, Thorsten (2022)
Ultrabright and narrowband intra-fiber biphoton source at ultralow pump power.
In: Quantum Science & Technology, 2022, 8 (1)
doi: 10.26083/tuprints-00022824
Artikel, Zweitveröffentlichung, Verlagsversion

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Kurzbeschreibung (Abstract)

Nonclassical photon sources of high brightness are key components of quantum communication technologies. We here demonstrate the generation of narrowband, nonclassical photon pairs by employing spontaneous four-wave mixing in an optically-dense ensemble of cold atoms within a hollow-core fiber. The brightness of our source approaches the limit of achievable generated spectral brightness at which successive photon pairs start to overlap in time. For a generated spectral brightness per pump power of up to 2 × 10⁹ pairs/(s MHz mW) we observe nonclassical correlations at pump powers below 100 nW and a narrow bandwidth of 2π × 6.5 MHz. In this regime we demonstrate that our source can be used as a heralded single-photon source. By further increasing the brightness we enter the regime where successive photon pairs start to overlap in time and the cross-correlation approaches a limit corresponding to thermal statistics. Our approach of combining the advantages of atomic ensembles and waveguide environments is an important step toward photonic quantum networks of ensemble-based elements.

Typ des Eintrags: Artikel
Erschienen: 2022
Autor(en): Bruns, Alexander ; Hsu, Chia-Yu ; Stryzhenko, Sergiy ; Giese, Enno ; Yatsenko, Leonid P. ; Yu, Ite A. ; Halfmann, Thomas ; Peters, Thorsten
Art des Eintrags: Zweitveröffentlichung
Titel: Ultrabright and narrowband intra-fiber biphoton source at ultralow pump power
Sprache: Englisch
Publikationsjahr: 2022
Ort: Darmstadt
Publikationsdatum der Erstveröffentlichung: 2022
Verlag: IOP Publishing
Titel der Zeitschrift, Zeitung oder Schriftenreihe: Quantum Science & Technology
Jahrgang/Volume einer Zeitschrift: 8
(Heft-)Nummer: 1
Kollation: 12 Seiten
DOI: 10.26083/tuprints-00022824
URL / URN: https://tuprints.ulb.tu-darmstadt.de/22824
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Herkunft: Zweitveröffentlichung DeepGreen
Kurzbeschreibung (Abstract):

Nonclassical photon sources of high brightness are key components of quantum communication technologies. We here demonstrate the generation of narrowband, nonclassical photon pairs by employing spontaneous four-wave mixing in an optically-dense ensemble of cold atoms within a hollow-core fiber. The brightness of our source approaches the limit of achievable generated spectral brightness at which successive photon pairs start to overlap in time. For a generated spectral brightness per pump power of up to 2 × 10⁹ pairs/(s MHz mW) we observe nonclassical correlations at pump powers below 100 nW and a narrow bandwidth of 2π × 6.5 MHz. In this regime we demonstrate that our source can be used as a heralded single-photon source. By further increasing the brightness we enter the regime where successive photon pairs start to overlap in time and the cross-correlation approaches a limit corresponding to thermal statistics. Our approach of combining the advantages of atomic ensembles and waveguide environments is an important step toward photonic quantum networks of ensemble-based elements.

Freie Schlagworte: photon pair sources, single photon sources, hollow core fiber, cold atoms, quantum technology, quantum communication
Status: Verlagsversion
URN: urn:nbn:de:tuda-tuprints-228244
Sachgruppe der Dewey Dezimalklassifikatin (DDC): 500 Naturwissenschaften und Mathematik > 530 Physik
Fachbereich(e)/-gebiet(e): 05 Fachbereich Physik
05 Fachbereich Physik > Institut für Angewandte Physik
Hinterlegungsdatum: 04 Nov 2022 12:04
Letzte Änderung: 07 Nov 2022 14:53
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