3 papers
quant-ph2026
Quantum-limited estimation of atmospheric turbulence via spatial mode decomposition
A. Hrebeniuk, M. Klen, I. Karuseichyk +2
We establish the ultimate precision limit for estimating the optical spatial coherence radius (Fried parameter) within a quantum metrological framework. In the weak field regime, w…
quant-ph2025
Circular-beam approximation for quantum channels in a turbulent atmosphere
I. Pechonkin, M. Klen, A. A. Semenov
The evolution of quantum states of light in free-space channels is strongly influenced by atmospheric turbulence, posing a significant challenge for quantum communication. The tran…
quant-ph2018
Nonclassicality and Bell nonlocality in atmospheric links
A. A. Semenov, M. Bohmann, D. Vasylyev +1
Free-space quantum links have clear practical advantages which are unaccessible with fiber-based optical channels --- establishing satellite-mediated quantum links, communications…