A.R. Usha Devi, A. K. Rajagopal, Sudha, H. S. Karthik and J. Prabhu Tej, Equivalence of classicality and separability based on P phase–space representation of symmetric multiqubit states , Quantum Information Processing, 12, 3717-3723 , 2013
A. R. Usha Devi, H. S. Karthik, Sudha, A. K. Rajagopal, Macrorealism from entropic Leggett-Garg inequalities, PRA 87, 052103 (2013), arxiv.org/pdf/1208.4491v3.pdf, 2012
Sudha, A. R. Usha Devi, A. K. Rajagopal, Monogamy of quantum correlations in three qubit pure states using Rajagopal-Rendell quantum deficit, Phys. Rev. A85 012103, arxiv.org/pdf/1110.3026v1.pdf, 2012
Peter Scherpelz, Dan Wulin, K. Levin, A. K. Rajagopal, Pseudogap effects of Fermi gases in the presence of a strong effective magnetic field, Phys. Rev. A 87, 063602 (2013), arxiv.org/pdf/1207.4826v1.pdf, 2012
Arun Kumar Pati, Mark M. Wilde, A. R. Usha Devi, A. K. Rajagopal, Sudha, Quantum discord and classical correlation can tighten the uncertainty principle in the presence of quantum memory, Phys. Rev. A 86, 042105, arxiv.org/pdf/1204.3803v3.pdf, 2012
J. Prabhu Tej, A. R. Usha Devi, A. K. Rajagopal, Quantum reading of digital memory with non-Gaussian entangled light, PRA87, 052308 (2013), arxiv.org/pdf/1210.0791v2.pdf, 2012
A.R. Usha Devi, Sudha, A.K.Rajagopal, Majorana representation of symmetric multiqubit states, Quantum Information Processing, Vol. 11, Issue 3, pp 685-710 (2012), arxiv.org/pdf/1103.3640, 2011
A. R. Usha Devi, A. K. Rajagopal, Sudha, Open-system quantum dynamics with correlated initial states, not completely positive maps, and non-Markovianity, Phys. Rev. A 83, 022109, arxiv.org/pdf/1011.0621, 2011
A. R. Usha Devi, A. K. Rajagopal, Sudha, Quantum dynamical maps and Markovianity, arxiv.org/pdf/1104.4566, 2011
A. R. Usha Devi, A. K. Rajagopal, Sudha, Quantumness of correlations and entanglement, Int. J. Quantum Inform. 09, 1757, arxiv.org/pdf/1105.4115, 2011