document: Fidelity of quantum teleportation through noisy channels We investigate quantum teleportation through noisy quantum channels by solving analytically and numerically a master equation in the Lindblad form . We calculate the fidelity as a function of decoherence rates and angles of a state to be teleported . It is found that the average fidelity and the range of states to be accurately teleported depend on types of noises acting on quantum channels . If the quantum channels are subject to isotropic noise , the average fidelity decays to 1/2 , which is smaller than the best possible value of 2/3 obtained only by the classical communication . On the other hand , if the noisy quantum channel is modeled by a single Lindblad operator , the average fidelity is always greater than 2/3
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extractive_keyphrases: fidelity quantum teleportation noisy quantum channels quantum channels classical communication lindblad operator isotropic noise
abstractive_keyphrases: analytical solution numerical solution alice bob sender recipient dual classical channels eigenstate