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5 papers · 1 filter
Non-Markovianity and Clauser-Horne-Shimony-Holt (CHSH)-Bell inequality violation in quantum dissipative systems
A. Thilagam, A. R. Usha Devi
We examine the non-Markovian dynamics in a multipartite system of two initially correlated atomic qubits, each located in a single-mode leaky cavity and interacting with its own bo…
Quantum reading of digital memory with non-Gaussian entangled light
J. Prabhu Tej, A. R. Usha Devi, A. K. Rajagopal
It has been shown recently (Phys. Rev. Lett. 106, 090504 (2011)) that entangled light with Einstein-Podolsky-Rosen (EPR) correlations retrieves information from digital memory bett…
Macrorealism from entropic Leggett-Garg inequalities
A. R. Usha Devi, H. S. Karthik, Sudha +1
We formulate entropic Leggett-Garg inequalities, which place constraints on the statistical outcomes of temporal correlations of observables. The information theoretic inequalities…
Quantum discord and classical correlation can tighten the uncertainty principle in the presence of quantum memory
Arun Kumar Pati, Mark M. Wilde, A. R. Usha Devi +2
Uncertainty relations capture the essence of the inevitable randomness associated with the outcomes of two incompatible quantum measurements. Recently, Berta et al. have shown that…
Interplay of quantum stochastic and dynamical maps to discern Markovian and non-Markovian transitions
A. R. Usha Devi, A. K. Rajagopal, Sudha +1
It is known that the dynamical evolution of a system, from an initial tensor product state of system and environment, to any two later times, t1,t2 (t2>t1), are both completely pos…