Designing a quantum network protocol
Designing a quantum network protocol
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DOI：
10.1145/3386367.3431293
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发表时间：
2020-10
期刊：
影响因子：
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通讯作者：
W. Kozlowski;A. Dahlberg;S. Wehner
中科院分区：
文献类型：
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作者：
W. Kozlowski;A. Dahlberg;S. Wehner
第二次量子革命带来了量子互联网的希望。随着第一个量子网络硬件原型接近完成，新的挑战出现了。功能网络不仅仅是物理硬件，但可扩展量子网络系统的工作还处于起步阶段。在本文中，我们提出了一种量子网络协议，旨在面对量子力学带来的新的基础和技术挑战，实现端到端的量子通信。我们开发了一种量子数据平面协议，可实现端到端量子通信，并可作为更复杂服务的构建块。近期量子技术的关键挑战之一是退相干（量子信息的逐渐衰减），这对存储时间施加了极其严格的限制。我们的协议旨在在面对短量子存储器寿命的情况下保持高效。我们使用量子网络模拟器对此进行了演示，并表明即使面临因退相干而造成的重大损失，该协议也能够提供服务。最后，我们得出的结论是，该协议在当今正在开发的资源极其有限的硬件上仍然有效，这强调了这项工作的及时性。
The second quantum revolution brings with it the promise of a quantum internet. As the first quantum network hardware prototypes near completion new challenges emerge. A functional network is more than just the physical hardware, yet work on scalable quantum network systems is in its infancy. In this paper we present a quantum network protocol designed to enable end-to-end quantum communication in the face of the new fundamental and technical challenges brought by quantum mechanics. We develop a quantum data plane protocol that enables end-to-end quantum communication and can serve as a building block for more complex services. One of the key challenges in near-term quantum technology is decoherence --- the gradual decay of quantum information --- which imposes extremely stringent limits on storage times. Our protocol is designed to be efficient in the face of short quantum memory lifetimes. We demonstrate this using a simulator for quantum networks and show that the protocol is able to deliver its service even in the face of significant losses due to decoherence. Finally, we conclude by showing that the protocol remains functional on the extremely resource limited hardware that is being developed today underlining the timeliness of this work.