NIST Develops Advanced Noise Measurement Techniques for Quantum Technologies
The National Institute of Standards and Technology (NIST) has developed cutting-edge phase and amplitude noise measurement techniques for electromagnetic signals across various frequencies, from radio-frequency to optical. These high-precision measurements support critical applications like communications, remote sensing, radar, surveillance, GPS, and atomic clocks.
One significant contribution from NIST is identifying a flaw in cross-spectral analysis, a long-standing method for phase noise metrology. The team demonstrated that under certain amplitude and phase conditions, cross-spectral analysis can fail to detect the desired signal in the presence of an uncorrelated interfering signal. This discovery is crucial for understanding and improving noise metrology techniques.
NIST is also focusing on improving phase noise measurements at the W-Band (75-110 GHz), which is essential for various quantum technologies and applications.
Source: https://www.nist.gov/programs-projects/phase-and-amplitude-noise-metrology
Keywords: precision, metrology, measurements, noise, spectrum
