A matrix realignment method for recognizing entanglement

Details A matrix realignment method for recognizing entanglement A matrix realignment method for recognizing entanglement

2002-05-04

arxiv.org/abs/quant-ph/0205017v5

Quantum Information and Computation, Vol.3, No.3 (2003) 193-202

Physics

Quantum Physics

10 pages, 2 figures. Improved version with some new results and references, including response to quant-ph/0205054

Scientific paper

Motivated by the Kronecker product approximation technique, we have developed a very simple method to assess the inseparability of bipartite quantum systems, which is based on a realigned matrix constructed from the density matrix. For any separable state, the sum of the singular values of the matrix should be less than or equal to 1. This condition provides a very simple, computable necessary criterion for separability, and shows powerful ability to identify most bound entangled states discussed in the literature. As a byproduct of the criterion, we give an estimate for the degree of entanglement of the quantum state.

Affiliated with

Also associated with

No associations

Rating

A matrix realignment method for recognizing entanglement does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with A matrix realignment method for recognizing entanglement, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A matrix realignment method for recognizing entanglement will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-351277