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arXiv quant-ph/0308008quant-ph
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多方量子态多项式不变量的测量

Measuring Polynomial Invariants of Multi-Party Quantum States

M. S. Leifer, N. Linden, A. Winter

摘要:

我们提出了直接估计局域变换下多方量子态的多项式不变量的网络。这些网络的结构与不变量本身的结构密切相关,这为这些抽象的数学量提供了物理解释。具体来说,我们的网络估计局部酉(LU)变换和随机局部操作和经典通信(SLOCC)下的不变量。我们的网络可以估计多方状态的LU不变量,其中每一方可以具有任意维度的希尔伯特空间和多量子比特状态的SLOCC不变量。与基于估计状态系数和计算不变量的方法相比,我们分析了我们的网络的统计效率。

英文摘要:

We present networks for directly estimating the polynomial invariants of multi-party quantum states under local transformations. The structure of these networks is closely related to the structure of the invariants themselves and this lends a physical interpretation to these otherwise abstract mathematical quantities. Specifically, our networks estimate the invariants under local unitary (LU) transformations and under stochastic local operations and classical communication (SLOCC). Our networks can estimate the LU invariants for multi-party states, where each party can have a Hilbert space of arbitrary dimension and the SLOCC invariants for multi-qubit states. We analyze the statistical efficiency of our networks compared to methods based on estimating the state coefficients and calculating the invariants.

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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