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MON: Monday Contributed Sessions

MON 13: QIP Implementations: Photons II

MON 13.5: Talk

Monday, September 8, 2025, 17:30–17:45, ZHG001

Homodyne detection of pulsed squeezed states of light for Gaussian Boson Sampling — •Florian Lütkewitte¹, Sanaz Haddadian², Mikhail Roiz¹, Kai Hong Luo¹, Jan-Lucas Eickmann¹, J. Christoph Scheytt², Benjamin Brecht¹, Michael Stefszky¹, and Christine Silberhorn¹ — ¹Paderborn University, Integrated Quantum Optics, Institute for Photonic Quantum Systems (PhoQS), Warburger Str. 100, 33098, Paderborn, Germany — ²System and Circuit Technology Group, Heinz Nixdorf Institute, Paderborn University, 33102 Paderborn, Germany

With the advent of complex, hybrid photonic networks such as Gaussian Boson Sampling (GBS), it becomes increasingly important to produce high-quality single-spectral-mode single-mode squeezed states of light (SMSS), requiring precise engineering of spectral properties. Here, SMSS are generated by interfering the modes of a decorrelated, spectrally indistinguishable two-mode squeezed state.

Naturally, one also needs to verify the quality of these states, which can be done using single-shot homodyne detection, requiring tailored electronics and optics. This detection scheme also enables time-multiplexed architectures and measurement of complex heralded quantum states by post-selection. Here, we will show the suitability of single-shot homodyne detection for characterizing single-spectral-mode single-mode squeezed states for GBS

Keywords: squeezed light; Boson Sampling; photonics