Quantum Physics2026-02-181 minarXiv:2602.16215expressThe Laser Where Atoms Listen to Each OtherA regular laser is like a choir where everyone sings their own part — the sound is loud, but with inevitable roughness. In the new quantum laser, the singers hear each other and harmonize their voices.Da-Wu Xiao·Chong Chen·Ren-Bao LiuRainer WeissCharles TownesAlain Aspectsqueezed statelaserquantum opticscoherent statequantum measurement👍👎☆SimplePopularAdvanced