18 citations · 60 across the 19 of their papers we have counts for
19 papers
Entanglement of flower states
Samrat Sen, Ludovico Lami
The mysterious nature of entanglement, one of the most prominent exquisitely quantum phenomena, is reflected in its intricate operational structure, with a hierarchy of classes of…
Local state antimarking : Nonlocality without entanglement
Biswadeep Chatterjee, Tathagata Gupta, Pratik Ghosal +1
A set of quantum states is said to be antidistinguishable if, upon being given a randomly chosen state from the set, it is possible to exclude with certainty a state that was defin…
Quantum state exclusion with many copies
Debanjan Roy, Tathagata Gupta, Pratik Ghosal +2
Quantum state exclusion is the task of identifying at least one state from a known set that was not used in the preparation of a quantum system. A set of quantum states is said to…
Conclusive Local State Marking: More Nonlocality With No Entanglement
Samrat Sen
Nonlocality exhibited by ensembles of composite quantum states, wherein local operations and classical communication (LOCC) yield suboptimal discrimination probabilities compared t…
Nonlocality-Assisted Enhancement of Error-Free Communication in Noisy Classical Channels
Kunika Agarwal, Sahil Gopalkrishna Naik, Ananya Chakraborty +5
The zero-error capacity of a noisy classical channel quantifies its ability to transmit information with absolute certainty, i.e., without any error. Unlike Shannon's standard chan…
Scalable & Noise-Robust Communication Advantage of Multipartite Quantum Entanglement
Ananya Chakraborty, Ram Krishna Patra, Kunika Agarwal +4
Distributed computing, involving multiple servers collaborating on designated computations, faces a critical challenge in optimizing inter-server communication -- an issue central…
Harnessing Causal Indefiniteness for Accessing Locally Inaccessible Data
Sahil Gopalkrishna Naik, Samrat Sen, Ram Krishna Patra +4
Recent studies suggest that physical theories can exhibit indefinite causal structures, where the causal order of events is fundamentally undefined yet logically consistent. Beyond…
Asymptotic Birkhoff-Violation in Operational Theories: Thermodynamic Implications and Information Processing
Ananya Chakraborty, Sahil Gopalkrishna Naik, Samrat Sen +4
In accordance with the entropy principle of thermodynamics, under spontaneous evolutions, physical systems always evolve towards states with equal or greater randomness. But, where…
Overcoming Traditional No-Go Theorems: Quantum Advantage in Multiple Access Channels
Ananya Chakraborty, Sahil Gopalkrishna Naik, Edwin Peter Lobo +5
Extension of point-to-point communication model to the realm of multi-node configurations finds a plethora of applications in internet and telecommunication networks. Here, we esta…
Advantage of Hardy's Nonlocal Correlation in Reverse Zero-Error Channel Coding
Mir Alimuddin, Ananya Chakraborty, Govind Lal Sidhardh +5
Hardy's argument constitutes an elegant proof of quantum nonlocality. In this work, we report an exotic application of Hardy's nonlocal correlations in two-party communication setu…
Geometric invariants for a class of submodules of analytic Hilbert modules via the sheaf model
Shibananda Biswas, Gadadhar Misra, Samrat Sen
Let be a bounded connected open set and be an analytic Hilbert module, i.e., the Hilbert space possesses…
Timelike correlations and quantum tensor product structure
Samrat Sen, Edwin Peter Lobo, Ram Krishna Patra +4
The state space structure for a composite quantum system is postulated among several mathematically consistent possibilities that are compatible with local quantum description. For…
Principle of information causality rationalizes quantum composition
Ram Krishna Patra, Sahil Gopalkrishna Naik, Edwin Peter Lobo +4
Principle of information causality, proposed as a generalization of no signaling principle, has efficiently been applied to outcast beyond quantum correlations as unphysical. In th…
Distilling Nonlocality in Quantum Correlations
Sahil Gopalkrishna Naik, Govind Lal Sidhardh, Samrat Sen +3
Nonlocality, as established by seminal Bell's theorem, is considered to be the most striking feature of correlations present in space like separated events. Its practical applicati…
Classical analogue of quantum superdense coding and communication advantage of a single quantum system
Ram Krishna Patra, Sahil Gopalkrishna Naik, Edwin Peter Lobo +5
We analyze utility of communication channels in absence of any short of quantum or classical correlation shared between the sender and the receiver. To this aim, we propose a class…
Certifying beyond quantumness of locally quantum no-signalling theories through quantum input Bell test
Edwin Peter Lobo, Sahil Gopalkrishna Naik, Samrat Sen +3
Physical theories constrained with local quantum structure and satisfying the no-signalling principle can allow beyond-quantum global states. In a standard Bell experiment, correla…
Local Quantum State Marking
Samrat Sen, Edwin Peter Lobo, Sahil Gopalkrishna Naik +8
We propose the task of local state marking (LSM), where some multipartite quantum states chosen randomly from a known set of states are distributed among spatially separated partie…
Composition of multipartite quantum systems: perspective from time-like paradigm
Sahil Gopalkrishna Naik, Edwin Peter Lobo, Samrat Sen +5
Figuring out the physical rationale behind natural selection of quantum theory is one of the most acclaimed quests in quantum foundational research. This pursuit has inspired sever…
Mutually Unbiased Balanced Functions & Generalized Random Access Codes
Vaisakh M, Ram krishna Patra, Mukta Janpandit +3
Quantum resources and protocols are known to outperform their classical counterparts in variety of communication and information processing tasks. Random Access Codes (RACs) are on…