Lab Home | Phone | Search
Center for Nonlinear Studies  Center for Nonlinear Studies
 Home 
 People 
 Current 
 Affiliates 
 Alumni 
 Visitors 
 Students 
 Research 
 ICAM-LANL 
 Quantum 
 Publications 
 Publications 
 2007 
 2006 
 2005 
 2004 
 2003 
 2002 
 2001 
 2000 
 <1999 
 Conferences 
 Workshops 
 Sponsorship 
 Talks 
 Colloquia 
 Colloquia Archive 
 Seminars 
 Postdoc Seminars Archive 
 Quantum Lunch 
 CMS Colloquia 
 Q-Mat Seminars 
 Q-Mat Seminars Archive 
 Archive 
 Kac Lectures 
 Dist. Quant. Lecture 
 Ulam Scholar 
 Colloquia 
 
 Jobs 
 Students 
 Summer Research 
 Student Application 
 Visitors 
 Description 
 Past Visitors 
 Services 
 General 
 PD Travel Request 
 
 History of CNLS 
 
 Maps, Directions 
 CNLS Office 
 T-Division 
 LANL 
 
Monday, January 25, 2016
3:00 PM - 4:00 PM
CNLS Conference Room (TA-3, Bldg 1690)

Colloquium

Control of Dynamic Structures in Underactuated Ensembles

Jr-Shin Li
Washington University in St. Louis

Numerous natural and engineered systems that consist of ensembles of isolated or interacting dynamical components exhibit levels of complexity that are beyond human comprehension. These complex systems often require an appropriate excitation, an optimal hierarchical organization, or a periodic dynamical structure, such as synchrony, to function as desired or operate optimally. Many of them can be regulated by the application of external inputs, or may be coupled by a topology of connections whose strength can be tuned, in order to alter their dynamic configurations or to modify their rhythmic behavior. Such complex systems can be tremendously large in scale, while their dynamics can only be influenced by a limited number of external inputs. For example, in nuclear magnetic resonance spectroscopy and imaging, billions of spins are excited by using a common pulse sequence, and in brain stimulation for neurological disorders, thousands of neurons are affected by a single electrode. In this talk, I will address theoretical and computational challenges for engineering dynamic structures in ensemble systems through various compelling applications arising from the quantum and biological domains. In particular, I will present recent results in controllability and each ability of ensembles and introduce novel computational methods for optimal control synthesis for ensemble systems. Practical ensemble control designs, including optimal pulses in quantum control and entrainment waveforms for pattern formation in a network of nonlinear oscillators, will be illustrated along with their experimental realizations.

Host: Anatoly Zlotnik