Researchers at NIST and the University of Maryland’s Joint Quantum Institute have developed a new method to overcome the “standard quantum limit” in phase measurement, potentially revolutionizing fiber-optic communication. The team demonstrated error rates four times lower than previously thought possible using an adaptive, staged measurement approach.
The standard quantum limit has long been a barrier to more efficient phase detection, requiring higher power levels to maintain signal integrity. By making multiple partial measurements and adapting based on each result, the researchers achieved significantly better performance with off-the-shelf components.
While the technology is still in early stages, the breakthrough could lead to more efficient quantum technologies and improved data encryption systems. The next steps will involve further optimization and testing to bring the technology closer to practical implementation in fiber-optic communications.
Keywords: phase measurement, quantum limit, adaptive technology, fiber-optic systems, error rates
