Shohei Hayashi, Kazuki Horita, Joel Pérez-Urquizo, Tatsuo Dougakiuchi, Kazuue Fujita. "Publisher's note: “Quantum cascade detectors based on dual-upper-state active regions with a broadband response” [Appl. Phys. Lett. 128 , 093308 (2026)]." Applied Physics Letters, 2026. doi:10.1063/5.0333744