86 citations · 831 across the 53 of their papers we have counts for
4 papers · 1 filter
Optimal Asymmetric Quantum Cloning
Alastair Kay, Ravishankar Ramanathan, Dagomir Kaszlikowski
While the no-cloning theorem, which forbids the perfect copying of quantum states, is well-known as one of the defining features of quantum mechanics, the question of how well the…
The relation between nonlocality and contextuality for a biphoton
Akihito Soeda, Pawel Kurzynski, Ravishankar Ramanathan +2
We investigate the set of qutrit states in terms of symmetric states of two qubits that violate the minimal contextual inequality, namely the Klyachko-Can-Binicoglu-Shumovsky (KCBS…
Generalized monogamy of contextual inequalities from the no-disturbance principle
Ravishankar Ramanathan, Akihito Soeda, Pawel Kurzynski +1
In this paper we demonstrate that the property of monogamy of Bell violations seen for no-signaling correlations in composite systems can be generalized to the monogamy of contextu…
Entropic Test of Quantum Contextuality
Pawel Kurzynski, Ravishankar Ramanathan, Dagomir Kaszlikowski
We study the contextuality of a three-level quantum system using classical conditional entropy of measurement outcomes. First, we analytically construct the minimal configuration o…