Robust Phase-to-Record Conversion with Retained Loss Outputs

The question and the results

Which physical interaction turns an intensity-invisible phase distinction into a stable, readable flag when coupling, lifetime and calibration are limited?

• A complete two-mode source and bounded coherent reader retain conclusive, null and loss branches, including arbitrary inert references. A solved finite-lifetime control problem supplies an attaining sharp success frontier.
• Amplitude, phase and visibility uncertainty lead to an analytic minimax conditional-error/conclusive-rate frontier. An entrance filter separates the reader ratio from common uncertain conversion.
• Controlled-path overlap bounds quantify imperfect matching and the distance of the resulting pointer/reference channel. Retaining an output and having permission to measure it remain separate conditions.

Connections to the programme