Title
Remote information concentration via w W state: Reverse of ancilla-free phase-covariant telecloning
Abstract
In this paper, we investigate generalized remote information concentration as the reverse process of ancilla-free phase-covariant telecloning (AFPCT) which is different from the reverse process of optimal universal telecloning. It is shown that the quantum information via → 1 → 2 AEPCT procedure can be remotely concentrated back to a single qubit with a certain probability by utilizing (non-)maximally entangled w W states as quantum channels. Our protocols are the generalization of Wang's scheme (Open J Microphys 3:18-21. doi: 10.4236/ojm.2013.31004, 2013). And von Neumann measure and positive operator-valued measurement are performed in the maximal and non-maximal cases respectively. Relatively the former, the dimension of measurement space in the latter is greatly reduced. It makes the physical realization easier and suitable. © 2013 Springer Science+Business Media New York.
Year
DOI
Venue
2013
10.1007/s11128-013-0613-x
Quantum Information Processing
Keywords
DocType
Volume
Ancilla-free phase-covariant teleclong,Nonmaximally entangled w W state,POVM,Projective measurement,Remote information concentration,Three-qubit asymmetric entangled w W
Journal
12
Issue
ISSN
Citations 
11
null
1
PageRank 
References 
Authors
0.44
1
3
Name
Order
Citations
PageRank
Jiayin Peng1226.34
Mingqiang Bai263.08
Zhiwen Mo310019.48