Comment on "Groverian Entanglement Measure and Evolution of Entanglement in Search Algorithm for n(= 3, 5)-Qubit Systems with Real Coefficients" (Volume 6, Number 4, August 2007), by Arti Chamoli and C. M. Bhandari

Details Comment on "Groverian Entanglement Measure and Evolution of Entanglement in Search Algorithm for n(= 3, 5)-Qubit Systems with Real Coefficients" (Volume 6, Number 4, August 2007), by Arti Chamoli and C. M. Bhandari Comment on "Groverian Entanglement Measure and Evolution of Entanglement in Search Algorithm for n(= 3, 5)-Qubit Systems with Real Coefficients" (Volume 6, Number 4, August 2007), by Arti Chamoli and C. M. Bhandari

2009-08-14

arxiv.org/abs/0908.2031v1

Physics

Quantum Physics

4 pages, published online in Quantum Info. Process. on 24 July 2009

Scientific paper

10.1007/s11128-009-0122-0

We point out that the main results-the analytic expressions for the Groverian
Measure of Entanglement, in the above mentioned paper are erroneous. The
technical mistake of the paper is discussed. It is shown by an explicit example
that the formula for calculating the Groverian measure yields G(|\psi>) = 0 for
some entangled states.

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