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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-ph2023
Time correlations in atmospheric quantum channels
M. Klen, D. Vasylyev, W. Vogel +1
Efficient transfer of quantum information between remote parties is a crucial challenge for quantum communication over atmospheric channels. Random fluctuations of the channel tran…