71 citations · 169 across the 5 of their papers we have counts for
6 papers
Canonical structures of and forms
Sudha, B. N. Karthik, A. R. Usha Devi +1
In their seminal paper (Phys. Rev.121, 920 (1961)) Sudarshan, Mathews and Rau investigated properties of the dynamical and maps acting on dimensional quantum systems. N…
One Parameter family of N-qudit Werner-Popescu states: Bipartite separability using conditional quantum relative Tsallis entropy
Anantha S. Nayak, Sudha, A. R. Usha Devi +1
The conditional version of sandwiched Tsallis relative entropy (CSTRE) is employed to study the bipartite separability of one parameter family of N-qudit Werner- Popescu states in…
Monogamy of quantum correlations in three qubit pure states using Rajagopal-Rendell (RR) quantum deficit
Sudha, A. R. Usha Devi, A. K. Rajagopal
The limitation on the shareability of quantum entanglement over several parties, the so-called monogamy of entanglement, is an issue that has caught considerable attention of quant…
The thermostatistical aspect of Werner-type states and quantum entanglement
Sumiyoshi Abe, A. R. Usha Devi, A. K. Rajagopal
A general Werner-type state is studied from two viewpoints: (i) an application of dynamical interaction of the objective system with its environment, represented by a unital positi…
Generalized information theoretic measure to discern the quantumness of correlations
A. R. Usha Devi, A. K. Rajagopal
A novel measure, quantumness of correlations is introduced here for bipartite states, by incorporating the required measurement scheme crucial in defining any such quantity. Quantu…
Characterizing multiparticle entanglement in symmetric N-qubit states via negativity of covariance matrices
A. R. Usha Devi, R. Prabhu, A. K. Rajagopal
We show that higher order inter-group covariances involving even number of qubits are necessarily positive semidefinite for N qubit separable states, which are completely symmetric…