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19912026
Showing 2009 · quant-phShow all

5 papers · 2 filters

quant-ph2009★ 13 cited

Wigner distributions for finite state systems without redundant phase point operators

S. Chaturvedi, N. Mukunda, R. Simon

We set up Wigner distributions for state quantum systems following a Dirac inspired approach. In contrast to much of the work on this case, requiring a phase spac…

quant-ph2009★ 1 cited

Hamilton's theory of turns revisited

N. Mukunda, S. Chaturvedi, R. Simon

We present a new approach to Hamilton's theory of turns for the groups SO(3) and SU(2) which renders their properties, in particular their composition law, nearly trivial and immed…

quant-ph2009★ 19 cited

Persistence of nonlocality for bipartite quantum spin systems

Kaushik P. Seshadreesan, Sibasish Ghosh

Generic forms of the entangled states of two spin-1 (and spin-3/2) particles, along with the set of appropriate spin observables that together exhibit maximum nonlocality under the…

quant-ph2009★ 26 cited

Complete proof of Gisin's theorem for three qubits

Sujit K. Choudhary, Sibasish Ghosh, Guruprasad Kar +1

Gisin's theorem assures that for any pure bipartite entangled state, there is violation of Bell-CHSH inequality revealing its contradiction with local realistic model. Whether, sim…

quant-ph2009★ 32 cited

Spatial entanglement using a quantum walk on a many-body system

Sandeep K. Goyal, C. M. Chandrashekar

The evolution of a many-particle system on a one-dimensional lattice, subjected to a quantum walk can cause spatial entanglement in the lattice position, which can be exploited for…