High Fidelity 12-Mode Quantum Photonic Processor Operating at InGaAs Quantum Dot Wavelength

Reconfigurable quantum photonic processors are an essential technology for photonic quantum computing. Although most large-scale reconfigurable quantum photonic processors were demonstrated at the telecommunications C band around 1550 nm, high-performance single photon light sources utilizing quantu...

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Bibliographic Details
Published inarXiv.org
Main Authors de Goede, Michiel, Snijders, Henk, Venderbosch, Pim, Kassenberg, Ben, Narasimhan Kannan, Smith, Devin H, Taballione, Caterina, Epping, Jörn P, van den Vlekkert, Hans, Renema, Jelmer J
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 12.04.2022
Subjects
Accuracy
C band
Light sources
Microprocessors
Photonics
Processors
Quantum computing
Quantum dots
Reconfiguration
Silicon nitride
Wavelengths
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Summary:Reconfigurable quantum photonic processors are an essential technology for photonic quantum computing. Although most large-scale reconfigurable quantum photonic processors were demonstrated at the telecommunications C band around 1550 nm, high-performance single photon light sources utilizing quantum dots that are well-suited for photonic quantum computing operate at a variety of wavelengths. Thus, a demand exists for the compatibility of quantum photonic processors with a larger wavelength range. Silicon nitride (SiN) has a high confinement and wide transparency window, enabling compact, low-loss quantum photonic processors at wavelengths outside the C band. Here, we report a SiN universal 12-mode quantum photonic processor with optimal operation at a wavelength of 940 nm, which is compatible with InGaAs quantum dot light sources that emit light in the 900 nm to 970 nm wavelength range. The processor can implement arbitrary unitary transformations on its 12 input modes with a fidelity of 98.6 %, with a mean optical loss of 3.4 dB/mode.
ISSN:2331-8422