A team led by Dr. Mohammed Th. Hassan of the University of Arizona, with collaborators from ICFO in Spain and Ludwig-Maximilians-Universitat Munchen in Germany, accomplished this milestone using ultrafast squeezed light pulses with attosecond precision. Their work, published in Light: Science and Applications, provides the first real-time view of the uncertainty principle at work.
By producing ultrafast squeezed pulses through nonlinear four-wave mixing, the researchers generated some of the shortest quantum-synthesized light pulses ever made. They were able to dynamically switch between amplitude and phase squeezing - revealing that quantum uncertainty is not static, but instead a tunable and measurable phenomenon.
"This represents a paradigm shift in quantum optics," said Dr. Hassan. "We have shown that uncertainty is not only measurable in real time, but also controllable. This opens an entirely new window into quantum science and technology."
To demonstrate a practical application, the team proposed a petahertz-scale secure quantum communication protocol in which information is encoded directly into ultrafast squeezed waveforms. The approach provides intrinsic resistance to interception, potentially enabling next-generation high-speed encrypted networks.
The study establishes a foundation for ultrafast quantum optics and petahertz-scale optoelectronics, setting the stage for new frontiers in real-time quantum dynamics.
Research Report:Attosecond quantum uncertainty dynamics and ultrafast squeezed light for quantum communication
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