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理论物理通讯:英文版

Probabilistic Teleportation of n-Particle State via n Pairs of Entangled Particles

Zhu Shi

Published Jan 1, 2005• 0 citations
OpenAlex

Abstract

The teleportation of an arbitrary n-particle state is proposed when n pairs of entangled particles are utilized as quantum channels.It can be successfully realized with a certain probability which is determined by the smallest coefficients of n entangled pairs.Using a Latin square of order 2~n,explicit expressions of two unitary operations corresponding to different Bell-basis measurements performed by Alice can be obtained at the end of Bob.

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The teleportation of an arbitrary n-particle state is proposed when n pairs of entangled particles are utilized as quantum channels.It can be successfully realized with a certain probability which is determined by the smallest coefficients of n entangled pairs.Using a Latin square of order 2~n,explicit expressions of two unitary operations corresponding to different Bell-basis measurements performed by Alice can be obtained at the end of Bob.
The teleportation of an arbitrary n -particle state is proposed if n pairs of identical EPR states are utilized as quantum channels. Independent Bell state measurements are performed for joint measurement. By using a special Latin square of order , explicit expressions of outcomes after the Bell state measurements by Alice (sender) and the corresponding unitary transformations by Bob (receiver) can be derived. It is shown that the teleportation of n -particle state can be implemented by a series of single-qubit teleportation.
The teleportation of an arbitrary n-particle state (n ≥ 1) is proposed if n pairs of identical EPR states are utilized as quantum channels. Independent Bell state measurements are performed for joint measurement. By using a special Latin square of order 2n(n ≥ 1), explicit expressions of outcomes after the Bell state measurements by Alice (sender) and the corresponding unitary transformations by Bob (receiver) can be derived. It is shown that the teleportation of n-particle state can be implemented by a series of single-qubit teleportation.
A new representation of an arbitrary and unknown N -particle state is presented at first. As an application, a scheme for teleporting an arbitrary and unknown N -particle state is proposed when N pairs of two-particle non-maximally entangled states are utilized as quantum channels. After Alice (sender) makes Bell-state measurement on her particles, Bob (recipient) introduces an auxiliary particle and carries out appropriate unitary transformation on his particle and the auxiliary particle depending on classical information from Alice. Then, von Neumann measurement that confirms whether the teleportation succeeds or not is performed by Bob on the auxiliary particle. In order to complete the teleportation, another N -1 times operations need to be performed which are similar to the above ones. It can be successfully realized with a certain probability which is determined by the product of the smaller coefficients of non-maximally entangled pairs. All possible unitary transformations are given in detail.