Shared randomness is the central ingredient for stabilizing symmetrizable communication systems against arbitrarily varying jammers. Given the presence of the jammer, however, the question arises how this precious resource could have been distributed. Several works discuss the use of external sources for this task. In this work, we show, based on the most standard optical communication model, how the sender and receiver can employ either classically correlated thermal light or entangled two-mode squeezed states created at and transmitted by the sender to counter the jamming attack of an energy-limited jammer during the distribution phase. Both sender and receiver are only allowed to use homodyne detection in our model, and the sender has to obey a power limit as well.

翻译：共享随机性是稳定可对称化通信系统以对抗任意变化干扰器的核心要素。然而，在干扰器存在的情况下，这一宝贵资源如何能够被分发便成为一个问题。已有若干工作讨论了利用外部源完成此任务的方法。本文基于最标准的光通信模型，展示了发送方和接收方如何利用发送端产生并传输的经典相关热光或纠缠双模压缩态，以对抗能量受限干扰器在分发阶段的干扰攻击。在我们的模型中，发送方和接收方仅被允许使用零差检测，且发送方同样需遵守功率限制。