How LIGO Squeezes Light to Detect Gravity
From StarTalk. Neil presses on LIGO’s mind-boggling sensitivity—detecting arm-length changes far smaller than a proton—then challenges whether that beats quantum limits. Nergis explains quantum squeezing: you trade uncertainty between a light wave’s amplitude and phase (Heisenberg), cranking down the noise in phase—the thing LIGO measures—while letting amplitude get noisier. No laws are broken; the instrument…