Quantum 2025 – scientific programme
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TUE: Tuesday Contributed Sessions
TUE 5: QIP Certification and Benchmarking
TUE 5.4: Talk
Tuesday, September 9, 2025, 15:00–15:15, ZHG006
Benchmarking of Large Photonic Systems — •Jan-Lucas Eickmann1, Jonas Lammers1, Mikhail Roiz1, Kai-Hong Luo1, Simone Atzeni1, Florian Lütkewitte1, Fabian Schlue1, Cheeranjiv Pandey1, Timon Schapeler2, Benjamin Brecht1, Tim J. Bartley2, Michael Stefszky1, and Christine Silberhorn1 — 1Integrated Quantum Optics, Institute for Photonic Quantum Systems (PhoQS), Paderborn University, Warburger Str. 100, Paderborn 33098, Germany — 2Department of Physics & Institute for Photonic Quantum Systems (PhoQS), Paderborn University, Warburger Str. 100, Paderborn 33098, Germany
Photonics is a promising platform for noisy intermediate-scale quantum technologies due to its scalability and room-temperature operation. Taking advantage of deterministic squeezed state generation in parametric down-conversion, Gaussian boson sampling (GBS) has been proven to be a scalable approach towards photonic quantum simulation. The scheme consists of many single-mode squeezed states that are sent into an interferometer, before measuring the photon-number outputs. However, many factors impact the performance, like photon loss, interference quality, and spectral single-modeness of the quantum light source, requiring detailed system characterization. We present methods to characterize large photonic quantum systems, focusing on benchmarking quantum state generation and interference as well as estimating total system efficiency. We apply these methods to characterize the Paderborn Quantum Sampler (PaQS), a 12-mode Gaussian boson sampling device that incorporates many integrated components.
Keywords: Boson Sampling; Gaussian Boson Sampling; Quantum Photonics; Integrated Photonics; Quantum Optics