16 citations · 21 across the 7 of their papers we have counts for
8 papers
Witness-based quantification of non-Markovianity without complete Choi state reconstruction
Pritam Roy, Saheli Mukherjee, Bivas Mallick
Quantifying non-Markovianity is a fundamental problem in the theory of open quantum systems, as it is essential for exploiting environmental memory as a resource in quantum technol…
Maximizing Nonclassicality of Massive Objects via Quantum Zeno Effect
Debarshi Das, Pritam Roy, Marko Toroš +3
For testing quantum mechanics in the macroscopic domain, a major challenge is to devise effective means for enhancing the observable nonclassical signatures despite the ubiquitous…
Limits on Broadcasting Genuine Multipartite Entanglement in Quantum Networks
Pritam Roy, William John Munro, Shashank Gupta
We establish operational limits on the broadcasting of genuine multipartite entanglement (GME) in quantum networks. Using a distributed protocol in which each of N parties locally…
Exclusion reshapes the operational manifestation of preparation contextuality
Pritam Roy, Thansingh Jankawat, Ranendu Adhikary +1
Replacing the task of retrieval with exclusion changes how preparation contextuality manifests operationally under parity-oblivious constraints, with exclusion showing a quantum ad…
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…
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…
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…