581 citations · 2.3k across the 63 of their papers we have counts for
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Qubit and Entanglement assisted Optimal Entanglement Concentration
Somshubhro Bandyopadhyay
We present two method for optimal entanglement concentration from pure entangled states by local actions only. However a prior knowledge of the Schmidt coefficients is required. Th…
Barrier Perturbation Induced Superarrivals and Nonlocality in a Time-Evolving Wave Packet
Somshubhro Bandyopadhyay, Dipankar Home
We compute the time evolving probability of a Gaussian wave packet to be reflected from a rectangular potential barrier which is perturbed by reducing its height. A time interval i…
Bell's inequality for a single spin 1/2 particle and quantum contextuality
Sayandeb Basu, Somshubhro Bandyopadhyay, Guruprasad Kar +1
We argue that for a \emph{single particle} Bell's inequality is a consequence of noncontextuality and is \emph{incompatible} with statistical predictions of quantum mechanics. Thus…
Qubit assisted Conclusive Teleportation
Somshubhro Bandyopadhyay
We present an optimal method for teleporting an unknown qubit using any pure entangled state.
Optimal Universal Disentangling Machine for Two Qubit Quantum States
Sibasish Ghosh, Somshubhro Bandyopadhyay, Anirban Roy +2
We derive the optimal curve satisfied by the reduction factors, in the case of universal disentangling machine which uses only local operations. Impossibility of constructing a bet…
Disentanglement of pure bipartite quantum states by local cloning
Somshubhro Bandyopadhyay, Guruprasad Kar, Anirban Roy
We discuss disentanglement of pure bipartite quantum states within the framework of the schemes developed for entanglement splitting and broadcasting of entanglement.
Broadcasting of entanglement and universal quantum cloners
Somshubhro Bandyopadhyay, Guruprasad Kar
We study broadcasting of entanglement where we use universal quantum cloners (in general less optimal) to perform local cloning operations. We show that there is a lower bound on t…
Is an optimal quantum cloner the best choice for local copying in broadcasting entanglement?
Somshubhro Bandyopadhyay, Guruprasad Kar
The paper is temporarily withdrawn by the authors.