# 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... 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 $${G(|\psi\rangle)=0}$$ for some entangled states. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Quantum Information Processing Springer Journals

# 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

, Volume 8 (5) – Jul 24, 2009
4 pages

/lp/springer_journal/comment-on-groverian-entanglement-measure-and-evolution-of-9WNjLtbJzH
Publisher
Springer US
Subject
Physics; Quantum Information Technology, Spintronics; Quantum Computing; Data Structures, Cryptology and Information Theory; Quantum Physics; Mathematical Physics
ISSN
1570-0755
eISSN
1573-1332
D.O.I.
10.1007/s11128-009-0122-0
Publisher site
See Article on Publisher Site

### Abstract

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 $${G(|\psi\rangle)=0}$$ for some entangled states.

### Journal

Quantum Information ProcessingSpringer Journals

Published: Jul 24, 2009

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