581 citations · 2.3k across the 63 of their papers we have counts for
3 papers · 1 filter
Bell-Correlated Activable Bound Entanglement in Multiqubit Systems
Somshubhro Bandyopadhyay, Indrani Chattopadhyay, Vwani P. Roychowdhury +1
We show that the Hilbert space of even number () of qubits can always be decomposed as a direct sum of four orthogonal subspaces such that the normalized projectors onto the…
Robustness of multi-qubit entanglement in the independent decoherence model
Somshubhro Bandyopadhyay, Daniel A. Lidar
We study the robustness of the GHZ (or ``cat'') class of multi-partite states under decoherence. The noise model is described by a general completely positive map for qubits indepe…
Non-full rank bound entangled states satisfying the range criterion
Somshubhro Bandyopadhyay, Sibasish Ghosh, Vwani Roychowdhury
A systematic method for generating bound entangled states in any bipartite system, with ranks ranging from five to full rank, is presented. These states are constructed by mixing s…