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quant-ph2026
Measurement-based feedback as a flexible tool to control non-Poissonian photon statistics
Ming Li, JunYan Luo, Georg Engelhardt
Non-Poissonian photon statistics are usually traced to nonlinear interactions, nonclassical states, or engineered reservoirs. Here we show that measurement-based feedback can be al…
quant-ph2026
Beyond Photon Shot Noise: Chemical Limits in Spectrophotometric Precision
Georg Engelhardt, Dahai He, JunYan Luo
In this work, we investigate precision limitations in spectrophotometry (i.e., spectroscopic concentration measurements) imposed by chemical processes of molecules. Using the recen…
quant-ph2026
Heisenberg scaling in optical magnetometry with measurement-induced correlations as a quantum resource
Georg Engelhardt, Ming Li, Xingchang Wang +2
Theoretical proposals to reach the Heisenberg scaling of the measurement precision typically require carefully engineered interactions or initial entanglement. In studying optical…