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arXiv 2305.04435quant-phcs.ITmath.IT
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纠缠辅助多方计算中的通信复杂度

Communication complexity of entanglement assisted multi-party computation

Ruoyu Meng, Aditya Ramamoorthy

AI总结:

本文研究多方计算中纠缠辅助的通信复杂度,提出量子协议(复杂度$(n-1)\log n$)并证明其严格优于经典协议(复杂度$(n-1)^2(\log n^2)$),同时给出经典下界的整数线性规划公式。

摘要:

我们考虑一个量子与经典版本的多方函数计算问题,其中包含 $n$ 个玩家,玩家 $2, \dots, n$ 需要向玩家 1 传递适当的信息,以便能够计算一个带有适当承诺的“广义”内积函数。协议的通信复杂度是指需要通信的总比特数。当 $n$ 为素数且针对我们选择的函数时,我们展示了一个量子协议(复杂度为 $(n-1) \log n$ 比特)和一个经典协议(复杂度为 $(n-1)^2 (\log n^2)$ 比特)。在量子协议中,玩家可以访问纠缠的量子比特(qudits),但通信仍然是经典的。此外,我们提出了一个整数线性规划公式,用于确定经典通信复杂度的下界。这表明我们的量子协议严格优于经典协议。

英文摘要:

We consider a quantum and classical version multi-party function computation problem with $n$ players, where players $2, \dots, n$ need to communicate appropriate information to player 1, so that a "generalized" inner product function with an appropriate promise can be calculated. The communication complexity of a protocol is the total number of bits that need to be communicated. When $n$ is prime and for our chosen function, we exhibit a quantum protocol (with complexity $(n-1) \log n$ bits) and a classical protocol (with complexity $(n-1)^2 (\log n^2$) bits). In the quantum protocol, the players have access to entangled qudits but the communication is still classical. Furthermore, we present an integer linear programming formulation for determining a lower bound on the classical communication complexity. This demonstrates that our quantum protocol is strictly better than classical protocols.

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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