2 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-ph2024
Stronger speed limit for observables: Tight bound for the capacity of entanglement, the modular Hamiltonian and the charging of a quantum battery
Divyansh Shrimali, Biswaranjan Panda, Arun Kumar Pati
How fast an observable can evolve in time is answered by so-called ``observable speed limit". Here, we prove a stronger version of the observable speed limit and show that the prev…