3 papers
quant-ph2025
Secure One-Sided Device-Independent Quantum Key Distribution Under Collective Attacks with Enhanced Robustness
Pritam Roy, Subhankar Bera, A. S. Majumdar
We study the security of a quantum key distribution (QKD) protocol under the one-sided device-independent (1sDI) setting, which assumes trust in only one party's measurement device…
quant-ph2025
Robust certification of quantum instruments through a sequential communication game
Pritam Roy, Subhankar Bera, A. S. Majumdar +1
We propose a communication game in the sequential measurement scenario, involving a sender and two receivers with restricted communication among the latter parties. In the framewor…
quant-ph2025
Sharing quantum nonlocality and teleportation over long distance using optical hybrid states
Subhankar Bera, Soumyakanti Bose, Hyunseok Jeong +1
We analyze sharing Bell-type nonlocal correlation between two distant parties with optical hybrid states comprising a single photon polarization state and a multiphoton coherent st…