Harjas Sandhu

Complete information orders of quantum channels: equivalence and undecidability

About complete information orders of finite-dimensional quantum channels. With unrestricted finite quantum references, it claims equivalence of relative-entropy, Holevo, BKM, SLD Fisher-information and measured-chi-squared comparisons, with order reversal under genuine Stinesprin...

From complete channel order to capacity and one-way distillation

A universal construction that converts failure of complete quantum-channel information order into strictly positive ordinary private and quantum capacity. It claims an exact-zero capacity undecidability classification for finite rational-complex memoryless channels and correspond...