7 papers
Operational Coherent Measurements with Steering and Randomness
Chellasamy Jebarathinam, Huan-Yu Ku, Hsi-Sheng Goan
Measurement incompatibility underpins randomness generation in nonlocal phenomena. However, at its root, a more fundamental quantum feature is noncommuting (or coherent) measuremen…
Comment on "Contextuality and quantum discord"
Chellasamy Jebarathinam
In a paper, Al-Qasimi [Physics Letters A 449 (2022) 128347] proposed a criterion for contextuality of two-qubit systems extending Peres' proof of contextuality [Phys. Lett. A 151 (…
Popescu-Rohrlich box fraction of nonobjective information and distinguishing quantum theory
Chellasamy Jebarathinam
It is demonstrated that identifying information-theoretic limitations of quantum Bell nonlocality alone cannot completely distinguish quantum theory from generalized nonsignaling t…
Secure key distribution based on Popescu-Rohrlich box fraction of dimensionally restricted nonlocality
Chellasamy Jebarathinam
For the bipartite Bell scenario with two inputs and two outputs, a nonlinear witness of dimensionally restricted nonlocality is introduced. Popescu-Rohrlich (PR) box fraction of di…
Global Coherence in Quantum Discord as a Resource
Chellasamy Jebarathinam, Huan-Yu Ku, Hao-Chung Cheng +1
This work addresses which aspect of \textit{bipartite coherence} in \textit{quantum discord} is essential for \textit{genuinely quantum correlation}. To this end, \textit{global co…
Operational simultaneous correlations in complementary bases of bipartite states via one-sided semi-device-independent steering
Chellasamy Jebarathinam, Debarshi Das, Huan-Yu Ku +2
Recently, a different form of quantum steering, i.e., certification of quantum steering in a one-sided semi-device-independent way, has been formulated [Jebarathinam \etal Phys. Re…