Title
Analysis of N-qubit Perfect Controlled Teleportation Schemes from the Controller's Point of View
Document Type
Article
Publication Date
1-14-2015
Department
Physics & Computer Science
Abstract
We quantitatively analyze and evaluate the controller's power in N-qubit controlled teleportation schemes. We calculate the minimum control power required to ensure the controller's authority such that the teleportation fidelity without the controller's permission is no more than the classical bound. We revisit several typical controlled teleportation schemes from the controller's point of view and evaluate the control power in these schemes. We find that for teleporting arbitrary N-qubit states, each controller should control at least N bits of useful information to ensure his or her authority over the protocol. We also discuss the general rules that must be satisfied by controlled teleportation schemes to ensure both teleportation fidelity and control power.
Recommended Citation
X. Li and S. Ghose, "Analysis of N-qubit controlled teleportation schemes from the controller's point of view", Physical Review A 91, 012320, (2015).
Comments
Source: Physical Review A (Atomic, Molecular, and Optical Physics), v 91, n 1, p 012320 (5 pp.), Jan. 2015