{
  "id": 236181,
  "title": "New quantum microscopy trick quadruples microscope resolution",
  "url": "https://urgent.news/2026/08/06/new-quantum-microscopy-trick-quadruples-microscope-resolution-236181",
  "topic": "science",
  "section": "Science",
  "published": "2026-08-06T21:20:01.000Z",
  "source": {
    "name": "Phys.org",
    "slug": "phys-org",
    "url": "https://phys.org/news/2026-08-quantum-microscopy-quadruples-microscope-resolution.html"
  },
  "original_language": "en",
  "account": "A team of scientists at the California Institute of Technology (Caltech) has developed a groundbreaking technique in quantum microscopy that quadruples the resolution of a light microscope, compared to classical imaging. This advancement builds upon the team's previous work from 2023, where they demonstrated a two-fold resolution improvement using entangled photons in a phenomenon called Quantum Coincidence Microscopy (QMC).\n\nThe new technique, led by Lihong Wang, professor of Medical Engineering and Electrical Engineering at Caltech, involves routing the idler photon, an entangled partner of the signal photon, through the microscope's optics three times instead of just once. This multiple-pass approach utilizes a magnetic field and special optical tools to control the polarization of light. By doing so, the scientists effectively create a single photon pair that behaves as if it has twice the momentum of an individual photon, resulting in a shorter wavelength for the photons and thus improving resolution.\n\nIn their experimental validation, the researchers imaged a standard test target and found that the new triple-pass configuration achieved a four-fold resolution enhancement compared to classical imaging, and a 1.8-fold improvement over the previous two-fold configuration. This significant progress opens up new possibilities in various fields, including biomedical applications where non-damaging high-resolution imaging is crucial. The technique could enable clearer visualization of fine structures such as cell nuclei and mitochondria without causing tissue damage, and improve quality control in semiconductor device inspection by detecting defects at higher resolutions.\n\nWhile the experimental results validate the new approach, the researchers are still working on developing a complete theoretical model to explain the mechanism behind the enhancement. The team's initial skepticism towards the idea has given way to excitement as they strive to push this quantum microscopy technique even further, potentially achieving even greater resolution improvements in the future.",
  "summary": "Three years after a team of Caltech scientists showed that pairs of entangled photons could double the resolution of a light microscope, the same lab has figured out a way to double down on that improvement. They have now achieved a fourfold resolution boost compared to a classical microscope, using a new optical design that sends one of the entangled photons through the microscope's optics three…",
  "key_points": [
    "Caltech team develops quantum microscopy technique quadrupling resolution.",
    "Multiple-pass approach uses entangled photons' idler photon three times.",
    "New method achieves 4x resolution over classical imaging, 1.8x over previous 2x."
  ],
  "editors_take": "This breakthrough in quantum microscopy enables significantly clearer visualization of fine structures, such as cell nuclei and mitochondria, without tissue damage, and could improve quality control in semiconductor device inspection.",
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}