Scientists at NIST have developed a tiny, efficient nanodevice that can change the color (frequency) of single photons – particles of light – with high precision. This breakthrough could significantly improve the security and range of next-generation quantum communication systems.
The new nanoscale optical frequency converter is:
– Extremely small (about the width of a human hair)
– Highly efficient at converting photon frequencies
– Low power consumption (only a fraction of previous systems)
– Produces very low noise levels
– Can be easily integrated with other components
– Suitable for mass production
The device works by using a ring-shaped silicon nitride resonator, driven by two pump lasers. The incoming photon circulates around the ring hundreds of times, enhancing the frequency conversion process. This nanophotonic approach offers several advantages over previous technologies, including smaller size, easier customization, lower power requirements, and compatibility with batch fabrication methods.
The research, led by NIST’s Center for Nanoscale Science and Technology, demonstrates a promising new technology for quantum frequency conversion that could enable more secure and longer-range quantum communication systems.
Source: https://www.nist.gov/news-events/news/2016/04/new-nanodevice-shifts-lights-color-single-photon-level
Keywords: Frequency Conversion, Nanophotonics, Quantum Systems, Photonics, Silicon Nitride
