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9 March 2024 Engineering subwavelength-grating photonic integrated structures for quantum applications
Alejandro Sánchez-Postigo, Pablo Ginel-Moreno, Connor Graham-Scott, Jens H. Schmid, J. Gonzalo Wangüemert-Pérez, Alejandro Ortega-Moñux, Pavel Cheben, Íñigo Molina-Fernández, Carsten Schuck
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Proceedings Volume PC12890, Smart Photonic and Optoelectronic Integrated Circuits 2024; PC128900A (2024) https://doi.org/10.1117/12.3002731
Event: SPIE OPTO, 2024, San Francisco, California, United States
Abstract
Quantum photonics has emerged as a key driver for advancing applications, such as quantum communication and sensing, that harness the potential of quantum effects beyond classical capabilities. Photonic integrated circuits favor such implementations by providing low loss and interferometric stability. Nonetheless, to fully leverage these advantages, two major challenges need to be addressed: highly efficient fiber-to-chip light coupling and waveguide-integrated single-photon detection. In this work, we utilize subwavelength grating (SWG) metamaterials to design (i) novel off-chip couplers enabling sub-decibel coupling efficiency and (ii) a new superconducting nanowire single-photon detector (SNSPD) concept featuring enhanced photon absorption and fast detection.
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Alejandro Sánchez-Postigo, Pablo Ginel-Moreno, Connor Graham-Scott, Jens H. Schmid, J. Gonzalo Wangüemert-Pérez, Alejandro Ortega-Moñux, Pavel Cheben, Íñigo Molina-Fernández, and Carsten Schuck "Engineering subwavelength-grating photonic integrated structures for quantum applications", Proc. SPIE PC12890, Smart Photonic and Optoelectronic Integrated Circuits 2024, PC128900A (9 March 2024); https://doi.org/10.1117/12.3002731
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KEYWORDS
Nanowires
Engineering
Quantum applications
Waveguides
Design and modelling
Photonic metamaterials
Quantum devices
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