60 citations · 143 across the 9 of their papers we have counts for
8 papers · 1 filter
Sampling the spatial coherence of light
M. Vitek, M. Peterek, D. Koutny +6
We introduce a novel application of the Hartmann sensor, traditionally designed for wavefront sensing, to measure the coherence properties of optical signals. By drawing an analogy…
Neural-network quantum state tomography
D. Koutny, L. Motka, Z. Hradil +2
We revisit the application of neural networks techniques to quantum state tomography. We confirm that the positivity constraint can be successfully implemented with trained network…
Exploring the ultimate limits: Super-resolution enhanced by partial coherence
Zdeněk Hradil, Dominik Koutný, Jaroslav Řeháček
The resolution of separation of two elementary signals forming a partially coherent superposition, defined by quantum Fisher information and normalised with respect to detection pr…
Axial superlocalization with vortex beams
D. Koutny, Z. Hradil, J. Rehacek +1
Improving axial resolution is of paramount importance for three-dimensional optical imaging systems. Here, we investigate the ultimate precision in axial localization using vortex…
Intensity-Based Axial Localization at the Quantum Limit
J. Rehacek, M. Paur, B. Stoklasa +3
We derive fundamental precision bounds for single-point axial localization. For the case of a Gaussian beam, this ultimate limit can be achieved with a single intensity scan, provi…
Adaptive compressive tomography: a numerical study
D. Ahn, Y. S. Teo, H. Jeong +5
We perform several numerical studies for our recently published adaptive compressive tomography scheme [D. Ahn et al. Phys. Rev. Lett. 122, 100404 (2019)], which significantly redu…
Compressed sensing of twisted photons
F. Bouchard, D. Koutny, F. Hufnagel +8
The ability to completely characterize the state of a quantum system is an essential element for the emerging quantum technologies. Here, we present a compressed-sensing inspired m…
Adaptive compressive tomography with no a priori information
D. Ahn, Y. S. Teo, H. Jeong +8
Quantum state tomography is both a crucial component in the field of quantum information and computation, and a formidable task that requires an incogitably large number of measure…