108 citations · 326 across the 23 of their papers we have counts for
Showing 2014 · quant-phShow all
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quant-ph2014★ 11 cited
Entanglement properties of positive operators with ranges in completely entangled subspaces
R Sengupta, Arvind, Ajit Iqbal Singh
We prove that the projection on a completely entangled subspace S of maximum dimension in a multipartite quantum system obtained by Parthasarathy is not positive under partial tran…
quant-ph2014★ 108 cited
Witnessing genuine multipartite entanglement with positive maps
Marcus Huber, Ritabrata Sengupta
We derive a general framework that connects every positive map with a corresponding witness for partial separability in multipartite quantum systems. We show that many previous app…