Relative multiplexing for minimising switching in linear-optical quantum computing
Relative multiplexing for minimising switching in linear-optical quantum computing
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DOI：
10.1088/1367-2630/aa7095
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发表时间：
2017-06-01
影响因子：
3.3
通讯作者：
Rudolph, Terry
中科院分区：
文献类型：
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作者：
Gimeno-Segovia, Mercedes;Cable, Hugo;Rudolph, Terry
线性光学量子计算（LOQC）的许多现有方案都依赖于多路复用（MUX），它使用动态路由来实现使用预示的概率原语构建接近确定性的门和源。在目前的LOQC架构中，MUXing占据了绝大多数主动开关需求。在本文中，我们介绍了相对多路复用（RMUX），这是一种通用优化，可以显着降低LOQC中MUX的主动开关要求，从而降低硬件复杂性和能耗，以及放松对各种光子元件的性能要求。我们讨论了rmux在概率单光子源产生纠缠态中的应用，并认为可以将贝尔态的产生速率提高一个数量级。此外，我们将RMUX应用于Gimeno-Segovia等人（2015年）提出的3d集群状态的渗透建议。Rev. Lett. 115 020502)，我们发现RMUX允许2.4x。增加该体系结构的损失容忍度。
Many existing schemes for linear-optical quantum computing (LOQC) depend on multiplexing (MUX), which uses dynamic routing to enable near-deterministic gates and sources to be constructed using heralded, probabilistic primitives. MUXing accounts for the overwhelming majority of active switching demands in current LOQC architectures. In this manuscript we introduce relative multiplexing (RMUX), a general-purpose optimisation which can dramatically reduce the active switching requirements for MUX in LOQC, and thereby reduce hardware complexity and energy consumption, as well as relaxing demands on performance for various photonic components. We discuss the application ofRMUXto the generation of entangled states from probabilistic single-photon sources, and argue that an order of magnitude improvement in the rate of generation of Bell states can be achieved. In addition, we apply RMUX to the proposal for percolation of a 3Dcluster state by Gimeno-Segovia et al (2015 Phys. Rev. Lett. 115 020502), and we find that RMUX allows an 2.4x. increase in loss tolerance for this architecture.