activity
19992008
most citedDistinguishability of the Bell states

260 citations · 566 across the 20 of their papers we have counts for

collaborators

21 papers

quant-ph2008

Hardy's non-locality and generalized non-local theory

Sujit K. Choudhary, Sibasish Ghosh, Guruprasad Kar +3

Hardy's non-locality theorem for multiple two-level systems is explored in the context of generalized nonlocal theory. We find nonlocal but non-signaling probabilities, providing H…

quant-ph2007★ 3 cited

Local cloning of genuine entangled states of three qubit

Sujit K. Choudhary, Guruprasad Kar, Samir Kunkri +2

We discuss (im)possibility of the exact cloning of orthogonal but genuinely entangled three qubit states aided with entangled ancila under local operation and classical communicati…

quant-ph2007★ 6 cited

Local Cloning of Entangled Qubits

Sujit K. Choudhary, Samir Kunkri, Ramij Rahaman +1

We discuss the exact cloning of orthogonal but entangled qubits under local operations and classical communication. The amount of entanglement necessary in blank copy is obtained f…

quant-ph2004★ 13 cited

Locally Accessible Information and Distillation of Entanglement

Sibasish Ghosh, Pramod Joag, Guruprasad Kar +2

A new type of complementary relation is found between locally accessible information and final average entanglement for given ensemble. It is also shown that in some well known dis…

quant-ph2003

Probabilistic cloning and signalling

Sibasish Ghosh, Guruprasad Kar, Samir Kunkri +1

We give a proof of impossibility of probabilistic exact cloning of any three different states of a qubit. The simplicity of the proof is due to the use of a surprising res…

quant-ph2003★ 22 cited

Local cloning of Bell states and distillable entanglement

Sibasish Ghosh, Guruprasad Kar, Anirban Roy

The necessary and sufficient amount of entanglement required for cloning of orthogonal Bell states by local operation and classical communication is derived, and using this result,…