28 citations · 53 across the 8 of their papers we have counts for
8 papers
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…
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…
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…
Security of Device-independent Quantum Key Distribution under Sequential Attack
Pritam Roy, Souradeep Sasmal, Subhankar Bera +3
Device-independent quantum key distribution (DI-QKD) leverages nonlocal correlations to establish cryptographic keys between two honest parties while making minimal assumptions abo…
Efficient Computation of Generalized Noncontextual Polytopes and Quantum violation of their Facet Inequalities
Soumyabrata Hazra, Debashis Saha, Anubhav Chaturvedi +2
Finding a set of empirical criteria fulfilled by any theory satisfying the generalized notion of noncontextuality is a challenging task of both operational and foundational importa…
Device-Independent Quantum Secure Direct Communication Under Non-Markovian Quantum Channels
Pritam Roy, Subhankar Bera, Shashank Gupta +1
Device-independent quantum secure direct communication (DI-QSDC) is a promising primitive in quantum cryptography aimed towards addressing the problems of device imperfections and…
Device-Independent Quantum Key Distribution Using Random Quantum States
Subhankar Bera, Shashank Gupta, A. S. Majumdar
We Haar uniformly generate random states of various ranks and study their performance in an entanglement-based quantum key distribution (QKD) task. In particular, we analyze the ef…
Role of nonclassical temporal correlation in powering quantum random access codes
Subhankar Bera, Ananda G. Maity, Shiladitya Mal +1
We explore the fundamental origin of the quantum advantage behind random access code. We propose new temporal inequalities compatible with noninvasive-realist models and show that…