标题： 极端环境下的坚固纠缠光子源测试 显示英文标题

标题： Extreme environmental testing of a rugged correlated photon source

摘要： 长距离量子密钥分发实验推动了坚固型单光子源的发展，这种光源能够在脱离大多数光学实验室温暖、适宜环境的情况下仍能产生有用的关联。 作为将此类设备送入近地轨道（LEO）计划的一部分，我们开发并制造了一系列基于自发参量下转换的坚固型单光子源。 为了评估设备的可靠性，我们已将我们的设计置于各种热应力、机械应力和大气压力下进行测试。 我们的结果显示，尽管该设备可能能够承受发射进入轨道、在轨道上运行以及研究生随意处理的情况，但它很可能无法在运载火箭顶部被迅速扩张和氧化的煤油与液氧混合物强行拆解时幸存下来。 显示英文摘要

摘要： Experiments in long distance quantum key distribution have motivated the development of ruggedised single photon sources, capable of producing useful correlations even when removed from the warm, nurturing environment found in most optics laboratories. As part of an ongoing pro- gramme to place such devices into low earth orbit (LEO), we have developed and built a number of rugged single photon sources based on spontaneous parametric downconversion. In order to evalu- ate device reliability, we have subjected our design to various thermal, mechanical and atmospheric stresses. Our results show that while such a device may tolerate launch into orbit, operation in orbit and casual mishandling by graduate students, it is probably unable to survive the forcible disassembly of a launch vehicle at the top of a ball of rapidly expanding and oxidising kerosene and liquid oxygen.