General theory of photon detection based on quantum scattering systems
Abstract
The major goals of this project are to reveal the fundamental limits and trade-offs of photon detection by exploring (a) fundamental limit of quantum measurements on the physics level; and (b) fundamental limits of quantum light-matter interactions on the general detection level. The project will further apply these fundamental models to semiconductor quantum detectors in the following aspects: (1) Oscillation strength of quantum mechanical transitions; (2) Subwavelength photon management and its coupling to quantum systems. Here photon management refers to light trapping/subwavelength focusing for free-space detectors, and optical coupling/cavity design for guided-wave detectors. (3) Quantum mechanical and thermodynamic limits of optical-to-electrical signal conversion. (4) Max rate in relation to quantum transport and charge redistribution (e.g. due to change inwave functionn upon optical excitation); and (5) Dark counts in relation to carrier generation/recombination in quantum systems. Based on these fundamental studies, the project will definitively address the fundamental limits by providing a universal design chart of the trade-space based on first principles and a proof-of-concept design of semiconductor quantum detectors towards the specified key metrics in this solicitation...
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Feb 14, 2019
- Source ID
- W911NF1810064
Entities
People
- Zongfu Yu
Organizations
- Army Contracting Command
- Defense Advanced Research Projects Agency
- University of Wisconsin–Madison