14 citations · 31 across the 3 of their papers we have counts for
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quant-ph2005★ 14 cited
Partial scaling transform of multiqubit states as a criterion of separability
C. Lupo, V. Man'ko, G. Marmo +1
The partial scaling transform of the density matrix for multiqubit states is introduced to detect entanglement of quantum states. The transform contains partial transposition as a…
quant-ph2005★ 7 cited
Schmidt states and positivity of linear maps
Aik-meng Kuah, E. C. G. Sudarshan
Using pure entangled Schmidt states, we show that m-positivity of a map is bounded by the ranks of its negative Kraus matrices. We also give an algebraic condition for a map to be…
quant-ph2005★ 10 cited
Dynamics of Two Qubits: Decoherence and an Entanglement Optimization Protocol
Cesar A. Rodriguez, Anil Shaji, E. C. G. Sudarshan
The evolution of two qubits coupled by a general nonlocal interaction is studied in two distinct regimes. In the first regime the purity of the individual qubits is interchanged th…