Diverging Entanglement Length in Gapped Quantum Spin Systems

Details Diverging Entanglement Length in Gapped Quantum Spin Systems Diverging Entanglement Length in Gapped Quantum Spin Systems

2003-11-13

arxiv.org/abs/quant-ph/0311087v2

Phys. Rev. Lett. 92, 087201 (2004)

Physics

Quantum Physics

4 pages

Scientific paper

10.1103/PhysRevLett.92.087201

We prove the existence of gapped quantum Hamiltonians whose ground states exhibit an infinite entanglement length, as opposed to their finite correlation length. Using the concept of entanglement swapping, the localizable entanglement is calculated exactly for valence bond and finitely correlated states, and the existence of the so--called string-order parameter is discussed. We also report on evidence that the ground state of an antiferromagnetic chain can be used as a perfect quantum channel if local measurements on the individual spins can be implemented.

Affiliated with

Also associated with

No associations

Rating

Diverging Entanglement Length in Gapped Quantum Spin Systems 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 Diverging Entanglement Length in Gapped Quantum Spin Systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Diverging Entanglement Length in Gapped Quantum Spin Systems will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-47631