Models of gravitational decoherence are not commonly applied to ultra-relativistic systems, including photons. As a result, few quantum optical tests of gravitational decoherence have been developed. In this paper, we generalize the gravitational decoherence model of Anastopoulos and Hu (2013 Class. Quantum Grav. 30 165007) to photons. In this model, decoherence originates from a bath of stochastic gravitational perturbations, possibly of fundamental origin. We derive a master equation for general states of the electromagnetic field; the only free parameter is a noise temperature Θ of the gravitational fluctuations. We find that interference experiments with long baselines, accessible in near-future experiments, can, in principle, lead to strong constraints in Θ.

引力退相干模型通常不应用于超相对论系统，包括光子。因此，很少有引力退相干的量子光学测试被开发出来。在本文中，我们将 Anastopoulos 和 Hu (2013 Class. Quantum Grav . 30 165007)的引力退相干模型推广到光子。在这个模型中，退相干起源于随机引力扰动浴，可能是基本起源。我们推导出电磁场一般状态的主方程；唯一的自由参数是重力波动的噪声温度 Θ。我们发现，在近期的实验中可以使用长基线的干扰实验，原则上会导致 Θ 的强约束。