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Entangling capacities of noisy two-qubit Hamiltonians
Somshubhro Bandyopadhyay, Daniel A. Lidar
We show that intrinsic fluctuations in system control parameters impose limits on the ability of two-qubit (exchange) Hamiltonians to generate entanglement starting from mixed init…
New classes of n-copy undistillable quantum states with negative partial transposition
Somshubhro Bandyopadhyay, Vwani Roychowdhury
The discovery of entangled quantum states from which one cannot distill pure entanglement constitutes a fundamental recent advance in the field of quantum information. Such biparti…
Maximally-Disordered Distillable Quantum States
Somshubhro Bandyopadhyay, Vwani Roychowdhury
We explore classical to quantum transition of correlations by studying the quantum states located just outside of the classically-correlated-states-only neighborhood of the maximal…