论文标题
使用卫星提供纠缠光子对的耐故障分布式量子计算的时钟速度的上限
Upper Bounds for the Clock Speeds of Fault-Tolerant Distributed Quantum Computation using Satellites to Supply Entangled Photon Pairs
论文作者
论文摘要
尽管量子中继器网络最近取得了进步，但大陆规模上的纠缠分布仍然非常困难和资源密集。使用卫星在遥远的站点之间分布最大纠缠的光子（铃对）是一个有趣的选择。已知量子卫星网络对于量子密钥分布是可行的，但是到目前为止，该网络是否可行，对于容错分布式量子计算（FTDQC）是否可行。在本文中，我们确定了使用卫星网络之间可以在远处的易于断层量子盘中产生逻辑钟形对的速率的封闭形式表达式，以提供不完美的物理铃铛对。有了慷慨的参数假设，我们的结果表明，在全州范围内具有卫星网络（500-999 km）的FTDQC可以按1 MHz订单达到集体时钟速率，而大陆（1000-4999 km）和跨斜方（5000多公里）的距离（5000+公里）的距离分别在10 khz和10 khz和10 khz和100 khz和100 khz上运行。
Despite recent advances in quantum repeater networks, entanglement distribution on a continental scale remains prohibitively difficult and resource intensive. Using satellites to distribute maximally entangled photons (Bell pairs) between distant stations is an intriguing alternative. Quantum satellite networks are known to be viable for quantum key distribution, but the question of if such a network is feasible for fault tolerant distributed quantum computation (FTDQC) has so far been unaddressed. In this paper we determine a closed form expression for the rate at which logical Bell pairs can be produced between distant fault-tolerant qubits using a satellite network to supply imperfect physical Bell pairs. With generous parameter assumptions, our results show that FTDQC with satellite networks over statewide distances (500-999 km) is possible for a collective clock rate on the order of 1 MHz while continental (1000-4999 km) and transcontinental (5000+ km) distances run on the order of 10 kHz and 100 Hz respectively.
