传送需要多少钱？
How much does it cost to teleport?
摘要：
我们表明，一个状态的纠缠熵表征它的能力，心灵传输。特别地，为了忠实地传送未知的量子$N$ -态，两个用户必须共享具有至少$\log_2 N$比特纠缠熵的纠缠态。我们还注意到，一个混合态${\cal M}$的最大传送能力等于从${\cal M}$中提取出的最大纠缠熵。因此，我们的结果为纠缠纯化提供了另一种解释。
英文摘要：
We show that the entropy of entanglement of a state characterizes its ability to teleport. In particular, in order to teleport faithfully an unknown quantum $N$-state, the two users must share an entangled state with at least $\log_2 N$ bits entropy of entanglement. We also note that the maximum capacity for a mixed state ${\cal M}$ to teleport equals the maximum amount of entanglement entropy that can be distilled out from ${\cal M}$. Our result, therefore, provides an alternative interpretation for entanglement purification.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
