Quantum sensing improves light displacement detection precision

Researchers from the University of Portsmouth have made a significant advancement in quantum sensing. They have achieved a new level of precision in detecting tiny shifts in light at the nanoscale. This breakthrough could improve our understanding of various materials and enhance the accuracy of rotation measurements. The findings are published in the journal Physical Review A. The method relies on the unique behavior of two intertwined particles of light, known as photons. When these photons go through a beam-splitter, they create special interference patterns. By studying these patterns, the scientists can detect extremely small displacements with high precision. This new technique surpasses traditional methods and maintains accuracy regardless of the size of the shifts being measured. Professor Vincenzo Tamma, who led the study, stated that this development could make high-precision measurement tools more accessible across different fields. The research also highlights that simple detectors could be used for these measurements, making advanced quantum sensing technology more feasible for everyday applications. Professor Tamma noted that many current quantum sensing tools are complex and expensive, limiting their use in laboratories. By simplifying the technology, this research aims to integrate quantum sensing into more practical applications. The study's promising results have caught the interest of various collaborators in the industry and academia. They are eager to test these new techniques in real-world situations soon. This breakthrough represents a step forward in exploiting quantum laws, which may reshape our understanding of the universe and enhance many technologies in the future. Scientists are optimistic about future advancements in this area thanks to ongoing collaboration through the Quantum Science and Technology Hub.