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quant-ph2007★ 14 cited
Robustness of entangled states that are positive under partial transposition
Somshubhro Bandyopadhyay, Sibasish Ghosh, Vwani Roychowdhury
We study robustness of bipartite entangled states that are positive under partial transposition (PPT). It is shown that almost all PPT entangled states are unconditionally robust,…
quant-ph2007
Simulation of two spin- singlet correlations for all involving spin measurements
Ali Ahanj, Pramod S. Joag, Sibasish Ghosh
In a recent paper [A. Ahanj et al., quant-ph/0603053], we gave a classical protocol to simulate quantum correlations corresponding to the spin singlet state for the infinite se…