Not a physicist. Assuming gravitons exist, then that would mean that they are constantly being exchanged between objects of mass. This would imply that objects

Not a physicist. Assuming gravitons exist, then that would mean that they are constantly being exchanged between objects of mass. This would imply that objects containing mass at a fixed distance would spontaneously become entangled due to their gravitational interaction. A bit of googling reveals [0], which I believe describes such an experiment. [0] https://arxiv.org/pdf/1707.06050.pdf https://arxiv.org/pdf/1707.06050.pdf