Author

Bivas Mallick

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Preprint Sep 2026

Witness-based quantification of non-Markovianity without complete Choi state reconstruction

Quantifying non-Markovianity is a fundamental problem in the theory of open quantum systems, as it is essential for exploiting environmental memory as a resource in quantum technologies. Existing resource-theoretic and operational quantifiers, however, generally require complete knowledge of the intermediate dynamical...

Pritam Roy, Saheli Mukherjee, Bivas Mallick · 0 citations

Preprint Sep 2026

Optimal entanglement criteria from trace invariants

Randomized measurement protocols give experimental access to low-degree polynomial invariants of a quantum state rather than to the state itself, which raises the question of what the best entanglement criterion is that can be built from finitely many such invariants. In this work we answer this question through convex...

Bivas Mallick, Aabhas Gulati, Ion Nechita · 0 citations