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arXiv quant-ph/0406111quant-ph
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有限资源辅助下量子信道的不等式

Inequalities for quantum channels assisted by limited resources

Vittorio Giovannetti

摘要:

研究了辅助资源存在时量子信道的信息容量和“可扩展性”。这些包括发送者和接收者之间共享的先前纠缠以及前向和后向通信的自由经典比特。不等式和权衡曲线推导。特别是另一种证明,在没有反馈和共享纠缠的情况下,前向经典通信不会增加信道的量子容量。

英文摘要:

The information capacities and ``distillability'' of a quantum channel are studied in the presence of auxiliary resources. These include prior entanglement shared between the sender and receiver and free classical bits of forward and backward communication. Inequalities and trade-off curves are derived. In particular an alternative proof is given that in the absence of feedback and shared entanglement, forward classical communication does not increase the quantum capacity of a channel.

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。

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