Negative quasiprobabilities redistribute (and complex ones reduce) the information in unabsorbed photons

arXiv:2610.00740 · quant-ph, physics.optics · Submitted 2026-09-30 · Read on arXiv

quant-ph, physics.optics

Submitted: 2026-09-30

Updated: 2026-09-30

Comments: 17+10 pages, 6 figures

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Fisher Information — 42× in this paper · explained in 3 episodes
• Information Gain — 3× in this paper · explained in 2 episodes
• Trace — 3× in this paper · explained in 2 episodes
• Core — 1× in this paper · explained in 2 episodes
• Distillation — 1× in this paper · explained in 2 episodes
• Entanglement — 1× in this paper · explained in 3 episodes
• Post-Selection — 1× in this paper · explained in 2 episodes
• Quantum Zeno Effect — 1× in this paper · explained in 2 episodes
• Uncertainty Decomposition — 1× in this paper · explained in 2 episodes

Sources

• Counterfactual Quantum Sensing: What Interaction-Free Measurement Can and Cannot Buy
• Anomalous weak values in a generalized Mach-Zehnder interferometer extracted directly from intensity measurements
• Post-selected enhancement of phase sensitivity in a two-path interferometer
• Noncontextual versus contextual interferometry
• Optimal Interaction Free Localization with Multipath Interferometers

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