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arXiv quant-ph/0608142quant-ph
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量子态的可学习性

The Learnability of Quantum States

Scott Aaronson

摘要:

传统的量子态层析成像需要随着量子位数n呈指数增长的测量次数。但是,使用计算学习理论的思想,我们表明,“对于大多数实际目的”,人们可以学习一个状态,使用一些测量,只与n线性增长。除了对实验物理学的可能影响外,我们的学习定理在量子计算中还有两个应用:第一,量子单向通信协议的新模拟,第二,使用可信的经典建议来验证不可信的量子建议。

英文摘要:

Traditional quantum state tomography requires a number of measurements that grows exponentially with the number of qubits n. But using ideas from computational learning theory, we show that "for most practical purposes" one can learn a state using a number of measurements that grows only linearly with n. Besides possible implications for experimental physics, our learning theorem has two applications to quantum computing: first, a new simulation of quantum one-way communication protocols, and second, the use of trusted classical advice to verify untrusted quantum advice.

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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