165 citations · 1.4k across the 75 of their papers we have counts for
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quant-ph2009★ 9 cited
Entropic characterization of Separability in Gaussian states
Sudha Shenoy, A. R. Usha Devi, A. K. Rajagopal
We explore separability of bipartite divisions of mixed Gaussian states based on the positivity of the Abe-Rajagopal (AR) q-conditional entropy. The AR q-conditional entropic chara…
quant-ph2009★ 40 cited
Quantum target detection using entangled photons
A. R. Usha Devi, A. K. Rajagopal
We investigate performances of pure continuous variable states in discriminating thermal and identity channels by comparing their M-copy error probability bounds. This offers us a…
quant-ph2009★ 8 cited
Dynamical evolution of quantum oscillators towards equilibrium
A R Usha Devi, A K Rajagopal
A pure quantum state of large number N of oscillators, interacting via harmonic coupling, evolves such that any small subsystem n<<N of the global state approaches equilibrium. Thi…