Fluctuations Archives - IEEE Transactions on Quantum Engineering

Detection Error Probability Analysis over Atmospheric Quantum Channels with Pointing Errors: A Physically Admissible Bounded Transmissivity Framework

June 25, 2026Yazan H. Al-Badarneh, Osamah S. Badarneh, Mustafa K. Alshawaqfeh, Mazen O. Hasna, Tamer M. Khattab, Sami Muhaidat, Omar Alhussein, Khalid A. QaraqeEarly Access, Open AccessBinary phase shift keying, Educational institutions, Error probability, Fluctuations, High definition video, Joining processes, Modeling, Quantum channels, Receivers, Signal detection

Abstract: We develop an exact error probability framework for quantum free space optics (FSO) communication over atmospheric channels with turbulence and pointing errors under a physically admissible bounded transmissivity model. The proposed framework is grounded in the fundamental physical observation that, in a quantum optical channel, the random channel quantity is the transmissivity itself, namely, […]

Wavelet-Based Quantum Sensing of Geomagnetic Fluctuations With Multiple NV Ensembles

January 15, 2025Chou-Wei Kiang, Jean-Fu KiangQuantum Sensing & MetrologyFluctuations, Magnetic fields, Magnetometers, Masers, Quantum sensing, Satellites, Sensitivity, Sensors, Superconducting magnets, Temperature sensors

Nitrogen-vacancy (NV) ensembles are viable magnetometers to be implemented on nanosatellites for monitoring geomagnetic fluctuations, which are credible precursors for predicting earthquakes at short notice. In this work, a Haar wavelet-based quantum sensing method is proposed to reconstruct the time-varying waveform of geomagnetic fluctuations in the very low frequency band. To collect different frequency components […]