How gravitational fluctuations degrade the high-dimensional spatial entanglement

@article{Wu2022HowGF,
  title={How gravitational fluctuations degrade the high-dimensional spatial entanglement},
  author={Haorong Wu and Xilong Fan and Lixiang Chen},
  journal={Physical Review D},
  year={2022}
}
Twisted photons carrying orbital angular momentum (OAM) are competent candidates for future interstellar communications. However, the gravitational fluctuations are ubiquitous in spacetime. Thus a fundamental question arises naturally as to how the gravitational fluctuations affect the coherence and the degree of high-dimensional OAM entanglement when twisted photons travel across the textures of curved spacetime. Here, we consider the covariant scalar Helmholtz equations and the Minkowski metric… 
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