3 ms·

Distorted crystals use 'pseudogravity' to bend light like black holes do

3 points by westurner 3y ago

westurner 3y ago
"Deflection of electromagnetic waves by pseudogravity in distorted photonic crystals" (2023) https://journals.aps.org/pra/abstract/10.1103/PhysRevA.108.033522 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.
- westurner 3y ago
  Re: Quantum gravitational models observed superfluidity, and reasoning about sufficiency: https://news.ycombinator.com/item?id=37967527 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
  - westurner 3y ago
    https://westurner.github.io/hnlog/ https://westurner.github.io/hnlog/ /q photon, black hole, antimatter / Dirac sea / condensate / superfluid / quantum foam, Planck relic / microscopic black hole, dielectric, FTL
    - westurner 3y ago
      > FTL [Faster-Than Light] LightSlinger transceivers are built out of dielectrics.
westurner 3y ago
Potentially useful for such experiments and applications: "Universal visible emitters in nanoscale integrated photonics" (2023) https://opg.optica.org/optica/fulltext.cfm?uri=optica-10-7-871&id=532411 https://opg.optica.org/optica/fulltext.cfm?uri=optica-10-7-8... .. "Photonic chip transforms lightbeam into multiple beams with different properties" https://news.ycombinator.com/item?id=36580151 https://news.ycombinator.com/item?id=36580151 "Electrons turn piece of wire into laser-like light source" (2023) https://news.ycombinator.com/item?id=33493885 https://news.ycombinator.com/item?id=33493885 ; "Coherent Surface Plasmon Polariton Amplification via Free Electron Pumping" (2022) https://doi.org/10.21203/rs.3.rs-1572967/v1 https://doi.org/10.21203/rs.3.rs-1572967/v1 "Ultrafast dense DNA functionalization of quantum dots and rods for scalable 2D array fabrication with nanoscale precision" (2023) https://www.science.org/doi/10.1126/sciadv.adh8508 https://www.science.org/doi/10.1126/sciadv.adh8508 https://scitechdaily.com/scientists-create-new-material-five-times-lighter-and-four-times-stronger-than-steel/ https://scitechdaily.com/scientists-create-new-material-five... : > The team is currently working with the same DNA structure but substituting even stronger carbide ceramics for glass. They have plans to experiment with different DNA structures to see which makes the material strongest. "AI system can generate novel proteins that meet structural design targets" (2023) https://news.mit.edu/2023/ai-system-can-generate-novel-proteins-structural-design-0420 https://news.mit.edu/2023/ai-system-can-generate-novel-prote...

3 points by westurner 3y ago

"Deflection of electromagnetic waves by pseudogravity in distorted photonic crystals" (2023) https://journals.aps.org/pra/abstract/10.1103/PhysRevA.108.033522 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.

westurner 3y ago
Re: Quantum gravitational models observed superfluidity, and reasoning about sufficiency: https://news.ycombinator.com/item?id=37967527 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
- westurner 3y ago
  https://westurner.github.io/hnlog/ https://westurner.github.io/hnlog/ /q photon, black hole, antimatter / Dirac sea / condensate / superfluid / quantum foam, Planck relic / microscopic black hole, dielectric, FTL
  - westurner 3y ago
    > FTL [Faster-Than Light] LightSlinger transceivers are built out of dielectrics.

westurner 3y ago

Potentially useful for such experiments and applications: "Universal visible emitters in nanoscale integrated photonics" (2023) https://opg.optica.org/optica/fulltext.cfm?uri=optica-10-7-871&id=532411 https://opg.optica.org/optica/fulltext.cfm?uri=optica-10-7-8... .. "Photonic chip transforms lightbeam into multiple beams with different properties" https://news.ycombinator.com/item?id=36580151 https://news.ycombinator.com/item?id=36580151 "Electrons turn piece of wire into laser-like light source" (2023) https://news.ycombinator.com/item?id=33493885 https://news.ycombinator.com/item?id=33493885 ; "Coherent Surface Plasmon Polariton Amplification via Free Electron Pumping" (2022) https://doi.org/10.21203/rs.3.rs-1572967/v1 https://doi.org/10.21203/rs.3.rs-1572967/v1 "Ultrafast dense DNA functionalization of quantum dots and rods for scalable 2D array fabrication with nanoscale precision" (2023) https://www.science.org/doi/10.1126/sciadv.adh8508 https://www.science.org/doi/10.1126/sciadv.adh8508 https://scitechdaily.com/scientists-create-new-material-five-times-lighter-and-four-times-stronger-than-steel/ https://scitechdaily.com/scientists-create-new-material-five... : > The team is currently working with the same DNA structure but substituting even stronger carbide ceramics for glass. They have plans to experiment with different DNA structures to see which makes the material strongest. "AI system can generate novel proteins that meet structural design targets" (2023) https://news.mit.edu/2023/ai-system-can-generate-novel-proteins-structural-design-0420 https://news.mit.edu/2023/ai-system-can-generate-novel-prote...