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  4. Spontaneous Parametric Down-Conversion in Transition Metal Dichalcogenides
 
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2023
Conference Paper
Title

Spontaneous Parametric Down-Conversion in Transition Metal Dichalcogenides

Abstract
Transition metal dichalcogenides (TMDCs) thinned-down to the monolayer level allow the realisation of very broad-band, phase-matching free nonlinear devices. A particularly interesting application would be the generation of entangled photon-pairs, which form the backbone of many recent implementations in quantum optics. However, the limited absolute efficiency of monolayers has so far only allowed seeded parametric amplification [1], experimental evidence for the generation of entangled photon-pairs through spontaneous parametric down-conversion (SPDC) remained elusive up to now [2]. A promising route for the realization of broad-band photon-pair sources in van der Waals materials are moderately thicker, yet still phase-matching free layer stacks with preserved noncentrosymmetry [3, 4]. Here, we close the gap of a missing entangled photon-pair source in TMDCs and demonstrate, for the first time to our knowledge, pair generation via SPDC in 3R-MoS2
Author(s)
Weissflog, Maximilian A.
Fedotova, Anna
Tang, Yilin
Laudert, Benjamin
Abtahi, Fatemeh
Shradha, Sai
Shinde, Saniya
Saravi, Sina
Staude, Isabelle
Pertsch, Thomas  
Fraunhofer-Institut für Angewandte Optik und Feinmechanik IOF  
Setzpfandt, Frank  
Fraunhofer-Institut für Angewandte Optik und Feinmechanik IOF  
Lu, Yuerui
Eilenberger, Falk  
Fraunhofer-Institut für Angewandte Optik und Feinmechanik IOF  
Mainwork
Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference, CLEO/Europe-EQEC 2023  
Conference
Conference on Lasers and Electro-Optics Europe 2023  
European Quantum Electronics Conference 2023  
DOI
10.1109/CLEO/EUROPE-EQEC57999.2023.10232137
Language
English
Fraunhofer-Institut für Angewandte Optik und Feinmechanik IOF  
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