6 papers · 1 filter
Minimal Help, Maximal Gain: Environmental Assistance Unlocks Encoding Strength
Snehasish Roy Chowdhury, Sutapa Saha, Subhendu B. Ghosh +2
For any quantum transmission line, with smaller output dimension than its input, the number of classical symbols that can be reliably encoded is strictly suboptimal. In other words…
Gottesman-Knill Limit on One-way Communication Complexity: Tracing the Quantum Advantage down to Magic Resources
Snehasish Roy Chowdhury, Sahil Gopalkrishna Naik, Ananya Chakraborty +5
Quantum systems are known to offer advantages over their classical counterpart in communication complexity protocols, where the aim is to minimize the amount of information exchang…
Ergodiscord: An Operational and Distinct Notion of Quantumness of Correlations
Mir Alimuddin, Snehasish Roy Chowdhury, Ram Krishna Patra +4
Nonclassicality in composite quantum systems depicts several puzzling manifestations, with Einstein-Podolsky-Rosen entanglement, Schrödinger steering, and Bell nonlocality being th…
Minimum Detection Efficiencies for Loophole-free Genuine Nonlocality Tests
Subhendu B. Ghosh, Snehasish Roy Chowdhury, Ranendu Adhikary +2
The certification of quantum nonlocality, which has immense significance in architecting device-independent technologies, confronts severe experimental challenges. Detection loopho…
Quantum Nonlocality: Multi-copy Resource Inter-convertibility & Their Asymptotic Inequivalence
Subhendu B. Ghosh, Snehasish Roy Chowdhury, Guruprasad Kar +3
Quantum nonlocality, pioneered in Bell's seminal work and subsequently verified through a series of experiments, has drawn substantial attention due to its practical applications i…
Local Inaccessibility of Random Classical Information and Their Implications in the Change Point Problem
Snehasish Roy Chowdhury, Subhendu B. Ghosh, Tathagata Gupta +4
Discrimination of quantum states under local operations and classical communication (LOCC) is an intriguing question in the context of local retrieval of classical information, enc…