"Deflection of electromagnetic waves by pseudogravity in distorted photonic crystals" (2023) https://journals.aps.org/pra/abstract/10.1103/PhysRevA.108.0... :

We demonstrate electromagnetic waves following a gravitational field using a photonic crystal. We introduce spatially distorted photonic crystals (DPCs) capable of deflecting light waves owing to their pseudogravity caused by lattice distortion. We experimentally verify the phenomenon in the terahertz range using a silicon DPC. Pseudogravity caused by lattice distortion reveals alternative approaches to achieve on-chip trajectory control of light propagation in PCs.

Re: Quantum gravitational models observed superfluidity, and reasoning about sufficiency: https://news.ycombinator.com/item?id=37967527

Can distorted photonic crystals help confirm or reject current theories of superfluid quantum gravity?

Amplituhedrons are also "quantum-geometric" "manifolds" (?); and so no Feynman diagrams.

Could these be a layer in a PV/TPV cell? Isn't that almost already a rectenna?

Is there Hawking radiation in all things?

Can quantum wave functions be written to and read from holographically-encoded photonic crystals; thereby overcoming current qubit storage coherence limits of less than a second? IDK that holographic storage folks are yet aware of this either

https://westurner.github.io/hnlog/ /q photon, black hole, antimatter / Dirac sea / condensate / superfluid / quantum foam, Planck relic / microscopic black hole, dielectric, FTL