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quant-ph2026

Imaginarity-generating power of unitaries: A resource-theoretic approach

Akhil Kumar Awasthi, Mrinmoy Samanta, Sudipta Mondal +2

Imaginarity, stemming from the complex structure of quantum mechanics, has recently emerged as a fundamental resource, yet its dynamical generation remains largely unexplored. In t…

quant-ph2026

Hierarchies of Gaussian multimode entanglement from thermodynamic quantifiers

Mrinmoy Samanta, Sudipta Mondal, Ayan Patra +2

We develop a thermodynamic characterization of multimode entanglement in pure continuous-variable systems by quantifying the gap between globally and locally extractable work (ergo…

quant-ph2025

Efficient formulation of quantum network under amplitude damping noise: Highlighting benefits over its Pauli-twirled counterpart

Sudipta Mondal, Pritam Halder, Stav Haldar +1

At the heart of building a large-scale quantum internet lies the challenge of establishing long-distance entanglement using quantum repeaters, which mitigate direct transmission lo…

quant-ph2025

Hierarchy of entanglement detection criteria for random high-dimensional states

Akhil Kumar Awasthi, Sudipta Mondal, Rivu Gupta +1

Entanglement is a cornerstone in quantum information science, yet detecting it efficiently remains a challenging task. Focusing on non-positive partially transposed (NPT) states, w…

quant-ph2025

Disparity between multipartite entangling and disentangling powers of unitaries: Even vs Odd

Mrinmoy Samanta, Sudipta Mondal, Aditi Sen De

We compare the multipartite entangling and disentangling powers of unitary operators by assessing their ability to generate or eliminate genuine multipartite entanglement. Our find…

quant-ph2025

Classical capacities under physical constraints: More capacity with less entanglement

Sudipta Mondal, Pritam Halder, Saptarshi Roy +1

Current advancements in communication equipment demand the investigation of classical information transfer over quantum channels, by encompassing realistic scenarios in finite dime…