Freiburg 2024 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 35: Quantum States of Light
Q 35.7: Talk
Wednesday, March 13, 2024, 16:15–16:30, HS 3118
Gaussian state generation with Gaussian-Boson-Sampling like setups — •Marius Leyendecker1,2, Gil Zimmermann1,2, René Sondenheimer1,2, and Fabian Steinlechner1,2 — 1Friedrich Schiller University, Institute for Applied Physics, Abbe Center of Photonics, Jena, Germany — 2Fraunhofer Institute for Applied Optics and Precision Engineering IOF , Jena, Germany
Non-Gaussian states have numerous applications in quantum computation, quantum metrology, and quantum communication. It has been shown that Gaussian Boson Sampling (GBS) devices in combination with detection post-selection can be used to generate many optical non-Gaussian states. This is implemented by interfering N input squeezed states on an N-mode linear interferometer. We study an optimization algorithm for an M-mode target state depending on the properties of the input states and the interferometer. These states are heralded by N-M photon-number resolving measurements on the other output states. As losses have a substantial influence on the fidelity of the produced output state, simple interferometer architectures comprising of only few optical elements, e.g. in a time-bin loop architecture with one loop, will be analyzed. While in [1] a variety of entangled Gaussian states have been demonstrated in a time-bin loop architecture and [2] explores the capability of the architecture for GKP states, we will explore the capabilities of the time-bin architecture for non-gaussian states with lower demands on experimental resources.
[1] Shuntaro Takeda et al. , DOI:10.1126/sciadv.aaw4530
[2] Takase, K., et al. DOI: 10.1038/s41534-023-00772-y
Keywords: resource states; GBS; Gaussian Boson Sampling; non-gaussian; interferometer