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Acta Sinica Quantum Optica

Teleportation of a Two-particle Entangled State via a Special Partial Two-particle Entangled W State and a Partial Two-particle Entangled State

Bin Luo

Published Jan 1, 2007• 1 citation
OpenAlex

Abstract

A scheme for teleporting a two-particle entangled state via special partial two-particle entangled W state and partial two-particle entangled state is proposed.There is a certain probability of successful teleportion of a two-particle entangled state if the sender performs two Bell-state measurements while the receiver first makes a measurement in the basis of {|0〉,|1〉},then performs a controlled-not operation and furthur introduces an ancillary qubit and performs an appropriate unitary transformation at last.Analysis shows: when the quantum channel is of maximal entanglement,namely the channel is composed of a special two-particle entangled W state and a Bell state,the teleportion probability of this scheme reachs 2/3 and the teleportion effect of this scheme is between the scheme whose quantum channel is composed of W states and the one whose quantum channel is composed of Bell states.

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ACTA PHOTONICA SINICA•Jan 1, 2008•1 citation
A scheme for teleporting a two-particle entangled state via special partial two-particle entangled W state and partial two-particle entangled state is proposed.There is a certain probability of successful teleportion of a two-particle entangled state if the sender performs two Bell-state measurements while the receiver first makes a measurement in the basis of {|0〉,|1〉},then performs a controlled-not operation and furthur introduces an ancillary qubit and performs an appropriate unitary transformation at last.Analysis shows: when the quantum channel is of maximal entanglement,namely the channel is composed of a special two-particle entangled W state and a Bell state,the teleportion probability of this scheme reachs 2/3 and the teleportion effect of this scheme is between the scheme whose quantum channel is composed of W states and the one whose quantum channel is composed of Bell states.
We present a scheme for teleporting an arbitrary and unknown two-particle state from a sender to either one of two receivers. The quantum channel is composed of two non-maximally three-particle entangled W states. An arbitrary two-particle state can be perfectly teleported probabilistically if both the sender performs two generalized Bell-state measurements and either one of two receivers adopts an appropriate unitary transformation, conditioned on the suitable measurement outcomes of the other receiver and classical information.
A scheme for teleporting an arbitrary three-particle W state from a sender to either of the two receivers is proposed,where the three three-particle W states quantum channel are taken as quantum channels.There are two ways to realize the intention of teleportation.It is proved that,for such maximally entangled quantum channels,there is still a certain probability of successful teleportation if the sender performs three generalized Bell-state measurements while either of the two receivers performs an appropriate unitary transformation with the help of the other suitable measurements in the basis of {|0,|1} and classical information;on the other hand,the probability of successful teleportation is not affected by the order of operations.The present scheme may be directly generalized to teleport an unknown N-particle W state from a sender to either of the two receivers by using N W states as quantum channels,as well as performing N Bell measurements.
We present a scheme for teleporting an unknown arbitrary two-particle state from a sender to either one of two receivers. The quantum channel is composed of two partial entangled three-particle GHZ states. An unknown arbitrary two-particle state can be perfectly teleported probabilistically if the sender performs two generalized Bell-state measurements and each receiver introduces an appropriate unitary transformation with the help of the other receiver's Hadamard operations and simple measurements.
Four partially entangled two-particle states are used as the quantum channel.Two schemes for probabilistic teleportation of an arbitrary four-particle entangled state are presented.The entangled state can be perfectly teleported probabilistically from the sender to the receiver if the sender performs four Bell-state measurements while the receiver introduces auxiliary particles and performing appropriate unitary transformations.Based on transformation operator,the theoretical explanation of two schemes is given by utilizing the relation of the transformation operators.