QUANTUM SENSING THEORY FOR DETECTING SMALL SIGNAL CHANGES
Abstract
The goal of our project is to construct the ultimate quantum sensing theory for detecting small signal changes over time. In the field of sensing, it is important to detect signals of interest with the highest possible sensitivity; particularly in the case of weak signals such as gravitational fields and electromagnetic waves emitted from microscopic objects, it is necessary to consider quantum active sensing. So far, the authors have developed a theory of quantum process discrimination, which is a fundamental theory for dealing with such sensing. However, in many important practical problems, it is still difficult to obtain the ultimate performance allowed by physical laws due to the large problem size. In this project, we will address the problem of detecting changes in weak signals, which is considered to be such an important problem, by using the quantum state and/or process discrimination techniques that we have developed. We will also develop a theory to obtain optimal sensing strategies and/or theoretical performance limits. Our research will enable us to find the ultimate performance for practical quantum change point problems, which can in some situations be significantly more accurate than the classical methods.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Apr 20, 2023
- Source ID
- FA23862214056
Entities
People
- Kenji Nakahira
Organizations
- Air Force Office of Scientific Research
- Tamagawa University
- United States Air Force