Measurement and control in an open many body quantum system
Abstract
A new experimental platform will be developed in which individual rubidium atoms within an array of such atoms interact with one another by the exchange of photons, using the effects of cavity quantum electrodynamics within a strongly coupled Fabry Perot optical cavity to cause such photon exchange to occur with fidelity approaching unity. A high spatial resolution optical system will allow the cavity light interactions of individual atoms to be activated by exposing single atoms to coherent beams of light. Such light allows for single atom quantum control, selective optical readout of the state of single atoms, and selective programmed interaction between pairs of atoms. The project has four specific aims. First, the system will be completed and its operation verified. Second, we will explore how such single photon exchange interactions can be controlled to engineer specific forms of atom atom interaction, specific forms of single and few body quantum measurement, and specific forms of engineered dissipation that will drive atoms to particular targeted quantum states. Third, we will explore the quantum limits for optical measurements of many body quantum systems. Coherent quantum mechanical amplification will be used to enable measurements that are robust against optical shot noise. The application of post dictive quantum state estimation will be pursued, including demonstration of quantum correlations between optical signals used for state pre diction and post diction. Fourth, we will stabilize the states of many body quantum systems out of equilibrium through both autonomous and active feedback. Altogether, this research program will have broad impact on the emerging fields of quantum limited and quantum enabled sensing, and quantum information science.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jan 14, 2022
- Source ID
- FA95501910328
Entities
People
- Dan Stamper Kurn
Organizations
- Air Force Office of Scientific Research
- United States Air Force
- University of California Regents