POLARIZATION EFFECTS IN GRAVITATIONAL FIELD
Abstract
Quantum information theory studies how the laws of quantum mechanics affect the processing of information. It is a basis of new technologies and also source of new insights about physics. Quantum systems are now being deployed in space, testing quantum physics and technology at distances and velocities that are impossible on the ground. Polarization of light (a property of electromagnetic waves that specifies direction of oscillation of the electric field; the concept is valid both in classical and quantum theory) is often used to encode quantum information. It potentially impacts detection of quantum or classical signals. Gravitational field affects polarization. While the basic equations are well-established, their application to specific situations (in particular in the near-Earth environment), is still controversial. The approach taken in this project is based on a method of setting up polarization standard in curved spacetimes. It was developed by the PI and his group. The outcomes of these investigation include resolution of the controversy about of polarization rotation and its amount in several important settings, including communications and experiment with the Earth-orbiting satellites. The results will impact theoretical analysis of polarization in general relativity and alternative theories of gravity. They will clarify the methods of extraction of information from polarization rotation in astrophysical observations and determine the scale of these effects in precision metrology in the near-Earth environment.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Aug 11, 2021
- Source ID
- FA23862014016
Entities
People
- Daniel R Terno
Organizations
- Air Force Office of Scientific Research
- Macquarie University
- United States Air Force