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14 papers · 2 filters
Local Orthogonality provides better upper bound for Hardy's nonlocality
Subhadipa Das, Manik Banik, Md. Rajjak Gazi +2
The amount of nonlocality in quantum theory is limited compared to that allowed in generalized no-signaling theory [Found. Phys. 24, 379 (1994)]. This feature, for example, gets ma…
Maximally discordant separable two qubit states
Swapan Rana, Preeti Parashar
In a recent article S. Gharibian [\href{http://dx.doi.org/10.1103/PhysRevA.86.042106}{Phys. Rev. A {\bf 86}, 042106 (2012)}] has conjectured that no two qubit separable state of ra…
Three particle Hyper Entanglement: Teleportation and Quantum Key Distribution
P. Chithrabhanu, A. Aadhi, Salla Gangi Reddy +4
We present a scheme to generate three particle hyper-entanglement utilizing polarization and orbital angular momentum (OAM) of a photon. We show that the generated state can be use…
Local deterministic simulation of equatorial Von Neumann measurements on tripartite GHZ state
Arup Roy, Amit Mukherjee, Some Sankar Bhattacharya +2
Experimental free-will or measurement independence is one of the crucial assumptions in derivation of any nonlocal theorem. Any nonlocal correlation obtained in quantum world can h…
Temperature dependent weak value of dwell time for a two state particle tunneling through a thermal magnetic barrier
Samyadeb Bhattacharya
Dwell time for a two state particle tunneling through a noisy thermal magnetic barrier has been calculated by studying the time evolution of the system. The effect of temperature h…
Comment on "Sudden change in quantum discord accompanying the transition from bound to free entanglement"
Swapan Rana, Preeti Parashar
In a recent article [http://dx.doi.org/10.1103/PhysRevA.87.022340, Phys. Rev. A 87, 022340 (2013)], Yan et al have studied geometric discord for a well known class of bound entangl…