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Chinese Physics B

Channel parameters-independent multi-hop nondestructive teleportation

Huayang Li, Yuzhen Wei, Yi Ding, Min Jiang

Published Jul 12, 2021• 3 citations
Publisher

Abstract

A multi-hop nondestructive teleportation scheme independent of channel parameters based on Bell pairs is presented, where the coefficients of the quantum channel are unknown to all the communication nodes. With Bell measurement and channel matching technology the unknown channel parameters can be eliminated probabilistically with the help of the intermediate nodes. Then the source node Alice can teleport an unknown state to the remote destination node Bob. In our scheme the teleportation is generalized first to the scenario independent of channel parameters, which makes the requirement of quantum channel reduced. Our scheme still preserves the initial unknown state even if this teleportation fails. Moreover, performance analysis shows that our scheme has a higher communication efficiency.

DOI
10.1088/1674-1056/ac1330

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A multi-hop nondestructive teleportation scheme independent of channel parameters based on Bell pairs is presented, where the coefficients of the quantum channel are unknown to all the communication nodes. With Bell measurement and channel matching technology the unknown channel parameters can be eliminated probabilistically with the help of the intermediate nodes. Then the source node Alice can teleport an unknown state to the remote destination node Bob. In our scheme the teleportation is generalized first to the scenario independent of channel parameters, which makes the requirement of quantum channel reduced. Our scheme still preserves the initial unknown state even if this teleportation fails. Moreover, performance analysis shows that our scheme has a higher communication efficiency.
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Quantum teleportation aims to transfer an unknown quantum state between two remote parties who share an entangled pair in advance. We propose a quantum teleportation scheme for realizing d-dimensional point-to-point quantum teleportation without information loss based on non-maximally entangled Bell pairs. Compared with generalized probabilistic teleportation scheme, our scheme offers the chance to preserve the unknown quantum state if teleportation fails. In addition, our nondestructive teleportation scheme can reduce the communication delay on account of the fact that the information transmission and channel modulation can be performed simultaneously.
Multi-hop teleportation is a quantum teleportation scheme for transferring quantum states on a large scale. In this paper, a new multi-hop teleportation protocol is investigated for transferring arbitrary N-qubit states between M-neighbor nodes. In this scheme, intermediate nodes are connected with each other by symmetric entangled Bell states as quantum channels. First, one-hop teleportation of single-qubit, two-qubit and N-qubit states are introduced, then this method is generalized to two-hop and multi-hop teleportation for N-qubit. Also, we calculate the efficiency of this scheme.