Entangled Photons Boost Infrared Spectroscopy Signals by 21.8×

Researchers at the Research Center for Non-Destructive Testing and Johannes Kepler University have demonstrated a new approach to infrared spectroscopy that achieves a signal-to-noise ratio improvement of 26.8 dB (a factor of 21.8) compared to classical methods. The team’s sQFTIR technique reconstructs mid-infrared spectra (3000 cm-1 to 2380 cm-1) from measurements taken in the near-IR range (approximately 780 nm to 820 nm), eliminating the need for direct mid-IR measurements. This advancement removes the traditional requirement for optical delay scanning, utilizing instead a static, low-gain nonlinear interferometer and a reconstruction algorithm. The work, licensed July 20, 2026, demonstrates rapid hyperspectral imaging with a spatial resolution of 12.3 µm…