Optical Device Mimics Black and White Holes, Enabling New Technologies

An optical device emulating black and white holes has been created, potentially revolutionizing various technologies. Based on coherent perfect absorption, the device either fully absorbs or repels light, depending on polarization. This mirrors the behavior of black holes, which trap light, and white holes, theorized to emit energy. The device forms a standing wave between light beams, interacting with an ultrathin absorber for absorption or reflection. The outcome depends on the light's polarization, making the device tunable. Simulations confirmed the device's ability to mimic black and white hole characteristics. Nina Vaidya, professor at the University of Southampton, stated that such analogs offer access to physics, especially for distant objects like black holes. Potential applications include detection systems, energy harvesting, spectral camouflage, and stealth technology. The device could also provide a framework for tailoring electromagnetic waves and enhancing light-matter interactions.