Related Experiment Video
Updated: Sep 11, 2025

Visually Based Characterization of the Incipient Particle Motion in Regular Substrates: From Laminar to Turbulent Conditions
Published on: February 22, 2018
Characterization of a turbulent atmosphere simulator for qubits testbed
Abstract:
We developed a laboratory-scale testbed to simulate atmospheric turbulence effects and to investigate the role of turbulence on the quantum information content of a free-space qubit transport. We report the development, characterization, and calibration of the testbed for the statistical parameters of the turbulence employing two phase screens, which produced weak to strong turbulence replicating long distances in the atmosphere for single photon propagation. By taking a long-exposure image of the point-spread function of a pinhole and analyzing the associated modulation transfer function, we measured a D/r0 ranging from 1.04 to 23.27. Using irradiance fluctuations, we measured an on-axis scintillation index ranging from 0.25 to 2.02. The TASQ was designed to integrate a biphoton source, along with a single photon detection module to test the effect of turbulence on qubit transport. The calibrated setup will provide critical data for field experiments involving long-distance quantum networks.
Related Concept Videos
Turbulent Flow
Laminar and Turbulent Flow
Equilibrium Conditions for a Particle
To understand the concept of equilibrium, let us first consider the forces acting on an object. When different forces act on an object, they can...
Turbulent Flow: Problem Solving
Temperature is a key factor in CO2 solubility. In this case, the CO2 gas and the liquid are cooled to 20°C. Lower temperatures...
The Quantum-Mechanical Model of an Atom
Fermi Level Dynamics
Electron affinity in semiconductors refers to the energy gap between the minimum of its conduction band and the vacuum level and it is a critical parameter in determining how easily a semiconductor can accept additional electrons.
The work...

