Xin Wang

A chain of atoms on a chip with tiny gaps can act as an ultrasensitive sensor. Under certain conditions, the atoms collectively stop emitting light, entering a 'quiet' state. The slightest shift—as small as a thousandth of an atom—breaks this silence and sharply alters the spectrum. As the number of

The James Webb Space Telescope has spotted mysterious "Little Red Dots" in the early universe—compact objects that don't fit standard models. A new study suggests they may be quasi-stars: black holes shrouded in a dense gas cocoon that thermalizes radiation like a giant furnace. Calculations using t