Elsevier

Physics Letters A

Volume 343, Issue 4, 8 August 2005, Pages 267-273
Physics Letters A

A scheme for the teleportation of multiqubit quantum information via the control of many agents in a network

https://doi.org/10.1016/j.physleta.2005.06.048Get rights and content

Abstract

We present a new scheme for teleporting multiqubit quantum information from a sender to a distant receiver via the control of many agents in a network. We show that the receiver can successfully restore the original state of each qubit as long as all the agents cooperate. However, it is remarkable that for certain type of teleported states, the receiver cannot gain any amplitude information even if one agent does not collaborate. In addition, our analysis shows that for general input states of each message qubit, the average fidelity for the output states, when even one agent does not take action, is the same as that for the previous proposals.

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Acknowledgements

This research was partially supported in part by National Science Foundation ITR program (Grant No. DMR-0325551) and AFOSR (Grant No. F49620-01-1-0439), funded under the Department of Defense University Research Initiative on Nanotechnology (DURINT) Program and by the ARDA.

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