Better quantum computer

 This is an interesting paper. A scientist performs a thought experiment claiming that Einstein's General Relativity (which describes gravity and spacetime curvature effects) in principle allows one to obtain a better quantum computer, exponentially faster than the ones which exist, and capable of efficient solution for new classes of problems:

https://arxiv.org/abs/2403.02937

Obviously the scheme given here in the thought experiment may not be a practical one, but perhaps there are other means to achieve this, such as sending signals within the field of a large rotating mass such as the earth. Also, some related effects could even show up within classical physics to the extent it is the semiclassical limit of quantum behavior and these claims are true.