压缩复合态
Compressing compound states
摘要：
量子压缩不仅可以被认为是信号的压缩，也可以被认为是一种冷却形式。在这种观点中，人们感兴趣的不是信号，而是获得纯度。在复合系统中，人们可能感兴趣的是通过使用局部操作和经典通信来冷却系统以获得{ \it局部纯度}[Oppenheim等人，Phys. Rev. Lett. 89，180402（2002）]。在这里，我们比较它与通常的压缩，并发现它可以表示为压缩与适当的限制手段。
英文摘要：
Quantum compression can be thought of not only as compression of a signal, but also as a form of cooling. In this view, one is interested not in the signal, but in obtaining purity. In compound systems, one may be interested to cool the system to obtain {\it local purity} by use of local operations and classical communication [Oppenheim et al. Phys. Rev. Lett. 89,180402 (2002)]. Here we compare it with usual compression and find that it can be represented as compression with suitably restricted means.
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。
