3 papers
quant-ph2026
Genuine and Non-Genuine Quantum Non-Markovianity: A Unified Information-Theoretic Review
Rajeev Gangwar, Ujjwal Sen
Understanding whether the features of open quantum dynamics are genuinely quantum remains a central challenge in quantum dynamics. Even though the non-Markovian behavior of quantum…
quant-ph2026
Bounds on Entanglement Dynamics from Krylov-Space Spreading
Swati Choudhary, Sukrut Mondkar, Ujjwal Sen
A recently developed notion, known as spread complexity, captures how a quantum state spreads in Krylov space under unitary evolution. Related Krylov-space approaches are increasin…
quant-ph2025
Interference between lossy quantum evolutions activates information backflow
Sutapa Saha, Ujjwal Sen
Quantum evolutions are often non-unitary and in such cases, they are frequently regarded as lossy. Such lossiness, however, does not necessarily persist throughout the evolution, a…