摘要
We investigate chain teleportation of a qutrit-state via the non-maximally two-qutrit entangled channels.For the case of four parties,the efficiencies of two chain teleportation protocols,the separate chain teleportation protocol(SCTP),and the global chain teleportation protocol (GCTP),are calculated.In SCTP the errors are corrected betweenevery step while in GCTP the errors are corrected only at the end.Furthermore,we present a piecewise global chainteleportation protocol (PGCTP) for keeping away from the inconvenience of error-correction of GCTP.We show thatPGCTP is more efficient than SCTP.
基金
Supported by the National Natural Science Foundation of China under Grant Nos.10971247 and 10905016
Hebei Natural Science Foundation of China under Grant Nos.F2009000311and A2010000344
the Key Project of Science and Technology Research of Education Ministry of China under Grant No.207011
