Teleportation and dense coding with genuine multipartite entanglement.

Autor: Yeo Y; Department of Physics, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260, Singapore., Chua WK
Jazyk: angličtina
Zdroj: Physical review letters [Phys Rev Lett] 2006 Feb 17; Vol. 96 (6), pp. 060502. Date of Electronic Publication: 2006 Feb 15.
DOI: 10.1103/PhysRevLett.96.060502
Abstrakt: We present an explicit protocol E0 for faithfully teleporting an arbitrary two-qubit state via a genuine four-qubit entangled state. By construction, our four-partite state is not reducible to a pair of Bell states. Its properties are compared and contrasted with those of the four-party Greenberger-Horne-Zeilinger and W states. We also give a dense coding scheme D0 involving our state as a shared resource of entanglement. Both D0 and E0 indicate that our four-qubit state is a likely candidate for the genuine four-partite analogue to a Bell state.
Databáze: MEDLINE