A Continuous Variable Quantum Switch
A Continuous Variable Quantum Switch
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DOI：
10.1109/qce53715.2022.00057
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发表时间：
2022-09
期刊：
影响因子：
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通讯作者：
I. Tillman;Thirupathaiah Vasantam;K. Seshadreesan
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文献类型：
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作者：
I. Tillman;Thirupathaiah Vasantam;K. Seshadreesan
单模光场的连续求积为量子信息的编码提供了一条很有前途的途径。凭借相关希尔伯特空间的无限维度，与基于单光子的量子比特编码相比，这些连续变量（CV）的量子态可以实现更高的通信速率。量子中继器协议对于在直接传输上以增强的速率扩展量子通信的范围是必不可少的，最近也提出了用于CV量子编码。在这里，我们提出了一个量子重复开关CV量子编码，迎合多个通信流。交换机的架构是基于量子光源，检测器，存储器和交换结构，和路由协议是基于最大权重调度策略，是吞吐量最优的。我们提出了一个可实现的二分纠缠请求速率区域的多个CV纠缠流，可以稳定地支持通过开关的数值结果。我们阐明我们的结果与示例性的3流网络的帮助下。
The continuous quadratures of a single mode of the light field present a promising avenue to encode quantum information. By virtue of the infinite dimensionality of the associated Hilbert space, quantum states of these continuous variables (CV) can enable higher communication rates compared to single photon-based qubit encodings. Quantum repeater protocols that are essential to extend the range of quantum communications at enhanced rates over direct transmission have also been recently proposed for CV quantum encodings. Here we present a quantum repeating switch for CV quantum encodings that caters to multiple communication flows. The architecture of the switch is based on quantum light sources, detectors, memories, and switching fabric, and the routing protocol is based on a Max-Weight scheduling policy that is throughput optimal. We present numerical results on an achievable bipartite entanglement request rate region for multiple CV entanglement flows that can be stably supported through the switch. We elucidate our results with the help of exemplary 3-flow networks.