3 papers
quant-ph2025
Breaking Quantum Key Distributions under Quantum Switch-Based Attack
Sumit Nandi, Biswaranjan Panda, Pankaj Agrawal +1
Quantum key distribution (QKD) enables secure key sharing between distant parties, with several protocols proven resilient against conventional eavesdropping strategies. Here, we i…
quant-ph2025
Unitality Conditions on Subsystems in Quantum Dynamics
Anumita Mukhopadhyay, Shibdas Roy, Arun Kumar Pati
It is known that non-unital noise such as the amplitude damping can sometimes increase quantum correlations, while unital noise such as the dephasing usually decreases quantum corr…
quant-ph2024
Quantum Speed limit on the production of quantumness of observables
Divyansh Shrimali, Swapnil Bhowmick, Arun Kumar Pati
Non-classical features of quantum systems can degrade when subjected to environment and noise. Here, we ask a fundamental question: What is the minimum amount of time it takes for…