Achieving switchable UV/Vis circularly polarized luminescence by varying excitation wavelength in chiral indium halides

), a value about 30-fold greater than that of the emission in the visible region. The practical potential of switchable circularly polarized light is demonstrated through the construction of a chiral photonic logic gate and a subsequent anti-counterfeiting system based on Morse code. This work offers a viable design strategy for dynamically tunable CPL materials while demonstrating the promise of such materials for advanced applications in information security.