The experiment they propose to test the theory involve two masses about the size of a cell. So, big enough that it might someday (in the next 10 years they think) be possible to detect the gravitational waves, but small enough that they can still be entangled. If gravity is truly quantum in nature, the gravitational waves will be too, which is what they want to look for.
The experiment they propose to test the theory involve two masses about the size of a cell. So, big enough that it might someday (in the next 10 years they think) be possible to detect the gravitational waves, but small enough that they can still be entangled. If gravity is truly quantum in nature, the gravitational waves will be too, which is what they want to look for.