Researchers have recently demonstrated a non-Hermitian exceptional degenerate optical cavity, a type of cavity that allows for an unprecedented level of control of light and matter. This type of cavity can be used to control and manipulate the transmission of light through a medium, potentially leading to advances in quantum computing and communication. The cavity works by trapping light at specific wavelengths within the cavity, allowing it to be easily manipulated and tuned. This opens up the possibility of using such cavities to modify the properties of light, such as its speed and direction, enabling the development of optical devices and systems with unprecedented capability. The research team believes that this type of cavity could be used to create a range of new technologies, from optoelectronics to quantum computing.

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source: Phys.org