It has been proposed that quantum features of the gravitational field can be exposed experimentally by employing gravity as a mediator of entanglement. We show that in order to witness this type of entanglement experimentally, strong limits on acceleration noise, which has been neglected in previous work, must be overcome. In the case of two particles of similar mass, Casimir-Polder forces lead to a fundamental limit of tenths of $\femto\meter\,\power{s}{-2}/\sqrt{\hertz}$. Limits are between three and six orders of magnitude less strict for two particles of unequal mass, depending on collisional decoherence.

中文翻译：

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重力引起的纠缠加速度噪声约束

已经提出，可以通过采用重力作为纠缠介质来实验性地暴露引力场的量子特征。我们表明，为了通过实验目睹这种纠缠，必须克服先前工作中忽略的对加速度噪声的严格限制。对于质量相似的两个粒子，Casimir-Polder力导致基本极限为$ \ femto \ meter \，\ power {s} {-2} / \ sqrt {\ hertz} $。对于质量不相等的两个粒子，其限制的严格程度要低3到6个数量级，具体取决于碰撞退相干。