SUNMONTUEWEDTHUFRISAT
Events for March 19, 2019
-
Myoung-Gyun Suh Seminar, Tuesday, March 19th at 2PM in EEB 132
Tue, Mar 19, 2019 @ 02:00 PM - 03:30 PM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
Speaker: Myoung-Gyun Suh, California Institute of Technology
Talk Title: Optical microcombs: Towards ubiquitous precision measurements and beyond
Abstract: How do we make a precise clock? How do astronomers find Earth-like exoplanets? At the center of these questions lies a remarkable device, the Optical Frequency Comb. Optical frequency combs, or rulers of light, have revolutionized precision spectroscopy and metrology by enabling two distinct functions: first, the measurement of optical frequency with an unprecedented precision, and second, the counting of cycles of an optical field. The former has enabled the most accurate spectroscopy tools, new forms of LIDAR and astronomical calibration instruments used in the search for exoplanets, while the latter has enabled a new generation of optical clocks with accuracy orders-of-magnitude better than the current time standard[1].
In recent years, a miniature optical frequency comb (or microcomb) has been demonstrated using chip-based optical micro-resonators. Microcombs offer the prospect of shifting advanced metrology and spectroscopy tools from the realm of laboratory-scale systems to compact portable systems, thereby creating new research opportunities in mobile or space-borne instrumentation[2]. In this talk, I will introduce the principle of microcomb generation and recent developments in microcomb research including our work using high-Q silica micro-resonators[3-5]. Initial results in several application areas including spectroscopy[6], optical communications[7] and astronomy[8] will also be reviewed. Finally, after discussing challenges and opportunities in microcomb research, I will conclude by looking forward at opportunities enabled by microcomb technology, including precision spectroscopy, astronomy, and quantum information science.
Biography: Myoung-Gyun Suh is an experimental physicist in the Department of Applied Physics and Material Science at the California Institute of Technology (Caltech), where he has studied nonlinear optics using optical micro-resonators. His recent work focuses on developing novel chip-based optical sources (Brillouin lasers and micro-resonator soliton optical frequency combs) and exploring applications of these devices for optical sensors, precision spectroscopy, optical communications, and astronomy. He received his Ph.D. in Applied Physics from Caltech in 2017, M.S. in Physics from the National Taiwan University (NTU) in 2006, and B.S. in Physics from the Korea Advanced Institute of Science and Technology (KAIST) in 2004. He is a recipient of Taiwan scholarship and Kwanjeong scholarship. In his earlier research career, he was fascinated by interesting light-matter interaction phenomena in photonics crystal structures and he studied two-dimensional photonic crystal lasers for his B.S. and M.S. degrees. After completing his M.S., Dr. Suh worked at Samsung Advanced Institute of Technology (2006 - 2011) where he developed high efficiency Gallium Nitride light emitting diodes and III-V multi-junction solar cells.
Host: ECE-Electrophysics
Location: Hughes Aircraft Electrical Engineering Center (EEB) - 132
Audiences: Everyone Is Invited
Contact: Marilyn Poplawski
-
Legion: Programming Heterogeneous, Distributed Parallel Machines
Tue, Mar 19, 2019 @ 03:30 PM - 05:00 PM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
Speaker: Alex Aiken , Stanford University
Talk Title: Legion: Programming Heterogeneous, Distributed Parallel Machines
Abstract: Programmers tend to think of parallel programming as a problem of dividing up computation, but often the most difficult part is the placement and movement of data. As machines become more complex and hierarchical, describing what to do with the data is increasingly a first-class programming concern. Legion is a programming model and runtime system for describing hierarchical organizations of both data and computation at an abstract level. A separate mapping interface allows programmers to control how data and computation are placed onto the actual memories and processors of a specific machine. This talk will present the design of Legion, the novel issues that arise in both the design and implementation, and experience with applications.
Biography: Alex Aiken is the Alcatel-Lucent Professor of Computer Science at Stanford. Alex received his Bachelors degree in Computer Science and Music from Bowling Green State University in 1983 and his Ph.D. from Cornell University in 1988. Alex was a Research Staff Member at the IBM Almaden Research Center (1988-1993) and a Professor in the EECS department at UC Berkeley (1993-2003) before joining the Stanford faculty in 2003. His research interest is in areas related to programming languages. He is an ACM Fellow, a recipient of Phi Beta Kappa's Teaching Award, and a former chair of the Stanford Computer Science Department (2014-18).
Host: Xuehai Qian, xuehai.qian@usc.edu
More Information: 19.03.19 Alex Aiken_CENG Seminar.pdf
Location: Ronald Tutor Hall of Engineering (RTH) - 211
Audiences: Everyone Is Invited
Contact: Brienne Moore
