Mon, Jun 10, 2019 @ 02:00 PM - 03:30 PM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
Speaker: Jonathan Habif, Research Scientist at ISI Waltham
Talk Title: The Laboratory for Quantum-Limited Information: Optical Sensing at the Quantum Limit
Abstract: In this talk I will begin by introducing the Laboratory for Quantum-Limited Information (QLIlab), part of the USC Information Sciences Institute. QLIlab is focused on understanding the fundamental limits for extracting information from physical signals in photon-starved sensing and communications settings and demonstrating the capability to achieve these limits with novel designs for optical receivers. As an example, I will present our theoretical and experimental work on quantum-limited discrimination of photon-starved classical states. In this work the fundamental quantum limit for discriminating between thermal and coherent (laser) light is calculated, along with the error-probability for discrimination that can be achieved by using traditional optical receivers. The Generalized-Kennedy (GK) receiver is shown to have near optimal performance for this discrimination task. The GK receiver has been constructed in the laboratory and shown to out-perform theoretical limits from direct and coherent detection optical receivers. Finally, I will describe how this work will be extended to broader classes of sensing and communications challenges, including passive imaging and weak coherent signals buried in bright noise. A key goal for this talk is to engage with the audience to identify new optical and opto-electronic technologies that can help to realize optical receivers operating at the quantum limit of sensitivity, and ultimately miniaturize the systems so they can be transitioned up the technology readiness level scale.
Biography: Dr. Jonathan L. Habif is an experimental physicist and research lead at the University of Southern California Information Sciences Institute (ISI). His research has focused on photon-starved, classical communication and imaging, quantum-secured optical communications in free-space and fiber, and integrated nano-photonics for both classical and non-classical applications. Prior to joining ISI, Dr. Habif was with BBN technologies where he served as principal investigator for a number of DARPA-sponsored research programs, partnering with university collaborators to demonstrate revolutionary optical technologies impacting traditional communications, sensing and computation systems.
Dr. Habif earned a Ph.D. from the University of Rochester in the field of superconducting quantum computing and continued this course of research as a postdoctoral associate at MIT.
Audiences: Everyone Is Invited
Posted By: Marilyn Poplawski