Talk: Boulat Bash (June 20, 2022 at 11:30 AM, ICE Seminar room N2409)
Quantum-Enhanced Transmittance Sensing
The University of Arizona
Department of Electrical & Computer Engineering
We consider the problem of estimating unknown transmittance of a target bathed in thermal background light. As quantum estimation theory yields the fundamental limits, we employ lossy thermal noise bosonic channel model, which describes sensor-target interaction quantum-mechanically in many practical active-illumination systems (e.g., using emissions at optical, microwave, or radio frequencies). We prove that quantum illumination using two-mode squeezed vacuum (TMSV) states asymptotically achieves minimal quantum Cramer-Rao bound (CRB) over all quantum states (not necessarily Gaussian) in the limit of small input photon number. We characterize the optimal receiver structure for TMSV input and show its advantage over other receivers using both analysis and Monte Carlo simulation.
Boulat Bash is an assistant professor in the Department of Electrical and Computer Engineering, joining the university after working at Raytheon BBN Technologies in Cambridge, Massachusetts, for three and a half years. He earned an undergraduate degree in economics at Dartmouth College, and his MS and PhD degrees in computer science at the University of Massachusetts Amherst. Bash's research is focused on covert communications, which involves not only protecting the content of communications from adversaries, but keeping adversaries from detecting that communication is happening at all. Bash has authored or co-authored 26 journals, conference articles and technical reports and has one patent.