On the Analysis of a Multipartite Entanglement Distribution Switch

On the Analysis of a Multipartite Entanglement Distribution Switch
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多方纠缠分配开关的分析

DOI:
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发表时间:
2020
期刊:
Measurement and Modeling of Computer Systems
影响因子:
--
通讯作者:
D. Towsley
D. Towsley
中科院分区:
--
文献类型:
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作者:
P. Nain;Gayane Vardoyan;S. Guha;D. Towsley

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我们研究了一种量子开关,它将最大纠缠的多体态分配给多个用户。纠缠交换过程需要两个步骤:第一,每个用户尝试在自己和交换机之间产生二分纠缠;第二,交换机执行本地操作和测量,为一组用户创建多分纠缠。在这项工作中,我们研究了这个系统的一个简单的变体,其中开关具有无限的内存和连接用户到开关的链接是相同的。此外,我们假设所有的量子态,如果成功地产生,有完美的保真度和退相干是可以忽略的。这个问题的提法是几个分布式量子应用的兴趣,而这项工作的技术方面的结果在量子理论的新贡献。通过广泛使用的李雅普诺夫函数,我们推导出系统的稳定性和封闭形式的表达的开关容量和预期数量的量子位在内存中的必要条件和充分条件。
We study a quantum switch that distributes maximally entangled multipartite states to sets of users. The entanglement switching process requires two steps: first, each user attempts to generate bipartite entanglement between itself and the switch; and second, the switch performs local operations and a measurement to create multipartite entanglement for a set of users. In this work, we study a simple variant of this system, wherein the switch has infinite memory and the links that connect the users to the switch are identical. Further, we assume that all quantum states, if generated successfully, have perfect fidelity and that decoherence is negligible. This problem formulation is of interest to several distributed quantum applications, while the technical aspects of this work result in new contributions within queueing theory. Via extensive use of Lyapunov functions, we derive necessary and sufficient conditions for the stability of the system and closed-form expressions for the switch capacity and the expected number of qubits in memory.
DOI: 10.1109/tqe.2021.3058058
发表时间: 2019-03
影响因子: --
作者:
Gayane Vardoyan;S. Guha;P. Nain;D. Towsley
通讯作者: Gayane Vardoyan;S. Guha;P. Nain;D. Towsley
DOI: 10.1145/3571809
发表时间: 2023
影响因子: 0.6
作者:
Vardoyan, Gayane;Nain, Philippe;Guha, Saikat;Towsley, Don
通讯作者: Towsley, Don