Telecom‐Band Spontaneous Parametric Down‐Conversion in AlGaAs‐on‐Insulator Waveguides
Abstract: Widespread commercial adoption of telecom‐band quantum key distribution (QKD) will require fully integrated, room‐temperature transmitters. Implementing highly efficient spontaneous parametric down‐conversion (SPDC) on a platform that offers co‐integration of the pump laser has been an outstanding challenge. Here, using such a platform based on AlGaAs‐on‐insulator waveguides, telecom‐band SPDC (and SHG, second harmonic generation) is reported with exceedingly large efficiencies of 26 GHz generated pairs per mW over a 7 THz bandwidth, which would saturate the usable photon‐flux for a 70‐channel wavelength‐multiplexed QKD system at merely 1.7 mW of pump laser power.
- Standort
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Deutsche Nationalbibliothek Frankfurt am Main
- Umfang
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Online-Ressource
- Sprache
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Englisch
- Erschienen in
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Telecom‐Band Spontaneous Parametric Down‐Conversion in AlGaAs‐on‐Insulator Waveguides ; day:25 ; month:04 ; year:2024 ; extent:6
Laser & photonics reviews ; (25.04.2024) (gesamt 6)
- Urheber
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Placke, Marlon
Schlegel, Jan
Mann, Felix
Della Casa, Pietro
Thies, Andreas
Weyers, Markus
Tränkle, Günther
Ramelow, Sven
- DOI
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10.1002/lpor.202301293
- URN
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urn:nbn:de:101:1-2404261417146.085841019120
- Rechteinformation
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
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14.08.2025, 10:14 MESZ
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Beteiligte
- Placke, Marlon
- Schlegel, Jan
- Mann, Felix
- Della Casa, Pietro
- Thies, Andreas
- Weyers, Markus
- Tränkle, Günther
- Ramelow, Sven
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