噪聲環(huán)境下兩體糾纏的分發(fā)及操縱-資料下載頁(yè)
2025-05-16 03:01本頁(yè)面
【正文】 be impossible classically. However, during the distribution of entangled particles, their quantum entanglement will fall down resulting from decoherence induced by influence of environment, which will affect the practical application of quantum entanglement in all aspects. Thus, it is critical to investigate the decoherence properties of quantum entangled states in noise environment, as well as their distribution. This paper discusses the distribution of twoqubit entangled states in noise environment. Through detailed analysis and parison of the residual entanglement of two qubits after experiencing the same amplitude damping channel under two different cases where they have different initial states, we reveal a very meaningful phenomenon that the residual entanglement of initial entangled states with more amount of entanglement may be less than that of the states with less amount of entanglement. In addition, this paper studies the issue of tripartitetobipartite entanglement localization, and shows that the best measurement basis of one particle under the amplitudedamping noise is different from the result of the case without noise environment. This conclusion would contribute to the manipulation of twoqubit entanglement distributing and the establishment of twoqubit entanglement in the quantum network.Key words: quantum information。 quantum entanglement。 quantum decoherence。 entanglement distribution
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