Quantum discord and its allies: a review of recent progress

A Bera, T Das, D Sadhukhan, SS Roy… - Reports on Progress …, 2017 - iopscience.iop.org
We review concepts and methods associated with quantum discord and related topics. We
also describe their possible connections with other aspects of quantum information and …

Ability of unbounded pairs of observers to achieve quantum advantage in random access codes with a single pair of qubits

D Das, A Ghosal, AG Maity, S Kanjilal, A Roy - Physical Review A, 2021 - APS
Complications in preparing and preserving quantum correlations stimulate recycling of a
single quantum resource in information processing and communication tasks multiple times …

Quantum advantage for shared randomness generation

T Guha, M Alimuddin, S Rout, A Mukherjee… - Quantum, 2021 - quantum-journal.org
Sharing correlated random variables is a resource for a number of information theoretic
tasks such as privacy amplification, simultaneous message passing, secret sharing and …

Constructing a ball of separable and absolutely separable states for quantum system

S Adhikari - The European Physical Journal D, 2021 - Springer
Absolute separable states is a kind of separable state that remain separable under the
action of any global unitary transformation. These states may or may not have quantum …

Superunsteerability as a quantifiable resource for random access codes assisted by Bell-diagonal states

C Jebarathinam, D Das, S Kanjilal, R Srikanth… - Physical Review A, 2019 - APS
We show how nonclassical correlations in local bipartite states can act as a resource for
quantum information processing. Considering the task of quantum random access codes …

Quantum-error-correction-assisted quantum metrology without entanglement

KC Tan, S Omkar, H Jeong - Physical Review A, 2019 - APS
In this article we study the role that quantum resources play in quantum-error-correction-
assisted quantum metrology (QECQM) schemes. We show that there exist classes of such …

Operational nonclassicality of local multipartite correlations in the limited-dimensional simulation scenario

C Jebaratnam, D Das, S Goswami… - Journal of Physics A …, 2018 - iopscience.iop.org
For a bipartite local quantum correlation, superlocality refers to the requirement for a larger
dimension of the random variable in the classical simulation protocol than that of the …

Characterization of the quantumness of unsteerable tripartite correlations

D Das, C Jebaratnam, B Bhattacharya, A Mukherjee… - Annals of Physics, 2018 - Elsevier
Quantumness for a bipartite unsteerable quantum correlation is operationally characterized
by the notion of super-unsteerability. Super-unsteerability refers to the requirement of a …

Certifying quantumness beyond steering and nonlocality and its implications on quantum information processing

C Jebarathinam, D Das - arXiv preprint arXiv:1912.01270, 2019 - arxiv.org
Superunsteerability is a particular kind of spatial quantum correlation that can be observed
in a steering scenario in the presence of limited shared randomness. In this work, we define …

Role of nonclassical temporal correlation in powering quantum random access codes

S Bera, AG Maity, S Mal, AS Majumdar - Physical Review A, 2022 - APS
We explore the fundamental origin of the quantum advantage behind random access code.
We propose new temporal inequalities compatible with noninvasive-realist models and …