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Quantum 2.0 Conference and Exhibition

Quantum Holography With Undetected Light

Sebastian Töpfer, Marta Gilaberte Basset, Jorge Fuenzalida, Fabian Steinlechner, Juan P. Torres, Markus Gräfe

Published Jan 1, 2022• 5 citations
Publisher

Abstract

We experimentally implemented and characterized a quantum holography setup, by combining phase-shifting with quantum imaging using undetected photons. This allows transmission and phase measurements with a spectral separation between the sampling and detection wavelength.
DOI
10.1364/quantum.2022.qth2a.2

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Quantum imaging with undetected light has recently emerged as a technique in which quantum correlations and nonlinear interferometry are combined to decouple illumination and detection paths. This approach has been more recently extended and combined with digital phase-shifting holography and off-axis holography to extract both the amplitude and phase information of a sample relying on single-photon interference. Despite these advantages, implementing the technique in real-world scenarios where the observed system is subject to environmental noise and dynamic variations remains challenging. The primary limitation lies in the inability of quantum imaging systems to retrieve object information in real time under high-noise conditions. Here, we experimentally demonstrate real-time amplitude and phase imaging in noisy environments, building upon our previous implementation of quantum off-axis holography. Our results demonstrate real-time imaging at acquisition rates up to 4~Hz, even when the noise level exceeds the signal by an order of magnitude.