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QI: Fachverband Quanteninformation

QI 36: Poster – Quantum Information (joint session QI/Q)

QI 36.49: Poster

Donnerstag, 13. März 2025, 17:00–19:00, Tent

Sparse Optimization of Quantum Fourier Transform Spectroscopy — •Chinmay Sangavadekar¹, Zhengjun Wang^1,2, and Frank Schlawin^1,2,3 — ¹University of Hamburg, Luruper Chaussee 149, Hamburg, Germany — ²Max Planck Institute for the Structure and Dynamics of Matter, Hamburg, Germany — ³The Hamburg Centre for Ultrafast Imaging, Hamburg, Germany

Nonlinear interferometers are of fundamental importance for quantum-enhanced photonic sensing. They enable sensing in the infrared regime at low photon flux and without the need of detecting infrared photons. Here we present a theoretical model for quantum Fourier transform spectroscopy with nonlinear interferometers. We further explore how sparse optimization may reduce the necessary number of measurements and thereby speed up data acquisition.

Keywords: sparse optimization; nonlinear interferometry; Fourier-transform spectroscopy