Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Unitary Transformation in Quantum Teleportation   In the well known treatment of quantum teleportation, the receiver should
convert the state of his EPR particle into the replica of the unknown quantum
state by one of four possible unitary transformations. However, the importance
of these unitary transformations must be emphasized. We will show in this paper
that the receiver can not transform the state of his particle into an exact
replica of the unknown state which the sender want to transfer if he have not a
proper implementation of these unitary transformations. In the procedure of
converting state, the inevitable coupling between EPR particle and environment
which is needed by the implementation of unitary transformations will reduce
the accuracy of the replica.

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The categories of this paper are: hep-th
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The categories of this paper are: nucl-ex
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The categories of this paper are: physics
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The categories of this paper are: hep-lat
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The categories of this paper are: supr-con
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The categories of this paper are: cmp-lg
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The categories of this paper are: atom-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: cond-mat
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The categories of this paper are: alg-geom
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The categories of this paper are: eess
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The categories of this paper are: funct-an
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The categories of this paper are: gr-qc
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The categories of this paper are: solv-int
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The categories of this paper are: chao-dyn
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The categories of this paper are: acc-phys