STUDIES ON LIGHT-LIGHT AND LIGHT-MATTER INTERACTIONS, WITH A FOCUS ON INTERFEROMETRY, IMPROVED MEASUREMENTS, QUANTUM SENSING, AND THE EFFECTS OF QUANTUM NOISE ON THE DYNAMICS OF OPEN QUANTUM SYSTEMS
Abstract
We plan to perform interdisciplinary research at the interface of quantum optics, quantum open systems, quantum interferometry, and quantum information. This project focuses on light-light and light-matter interactions, in order to better understand these processes in the context of interferometry, improved measurements, quantum sensing, and the effect of quantum noise on the physics of open quantum systems. The work will be focused on several main tasks. Task 1: Exceptional points (EPs) are considered the basis for enhanced sensing, but they are also relevant, e.g., to describe dynamical phase transitions and characterize topological phases of matter. The vast majority of the quantum studies on EPs have ignored the effects of quantum jumps, which must be included. We plan to analyze quantum EPs of systems with losses, gain, and nonlinearity. In particular, we will study the effects of quantum jumps and temperature on quantum EPs and quantum sensing. Task 2: We recently proposed a method for exponentially enhancing the atom-field coupling in an optical cavity. We would like to develop more robust and more experimentally accessible methods for enhancing atom-cavity interaction and cooperativities, which could provide new applications for quantum sensing. Task 3: Noise effects are expected to be central to the performance of any sensing scheme as practical concerns will always require operation at the highest acceptable noise level. We plan to explore several ways where quantum mechanical effects could enhance the sensitivity of quantum sensors. Task 4: Theory of quantum sensing with generalized Mach-Zehnder interferometers in collaboration with an experimental group in the Czech Republic. Phase estimation using the standard perfect Mach-Zehnder interferometer (MZI) is one of the prototype examples of enhanced quantum metrology using entangled states. We will analyze the quantum regime (including phase estimation) in realistic generalized multi-port MZIs.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Aug 11, 2021
- Source ID
- FA23862014069
Entities
People
- Franco Nori
Organizations
- Air Force Office of Scientific Research
- RIKEN
- United States Army