Quantum Open System Frontiers: Entanglement, Decoherence and Control

Date :From 2011-04-07 To 2011-04-27
Advisory committee :
Local coordinators :Wuming Liu (Inst. Phys. CAS), Su Yi (ITP, CAS) and Jianqiang You (Fudan)
International coordinators :J. H. Eberly (Rochester), Bei-Lok Hu (Maryland) and Ting Yu (Stevens)

 

Recent years have witnessed rapid development in the theory and practice of quantum open systems advancing our understanding of fundamental issues at the foundation of quantum mechanics and nonequilibrium statistical physics with a wide range of applications, notably in the nascent yet fast-growing field of quantum information science (QIS). The theory of quantum open systems has grown to be the essential core or an integral part of modern quantum optics, atomic and many-body systems, soft condensed matter physics, chemistry and biophysics, while its main ideas are being explored and applied to fundamental issues in quantum field theory, particle physics, gravitation and cosmology.  In particular, the paradigm of quantum open system provides the conceptual and technical framework for the investigation of quantum decoherence, entanglement and control, the former two being the critical issues in realizing quantum information processing (QIP) such as quantum computing, quantum teleportation, quantum cryptography, while quantum control holds the key to opening up the exciting brave new world of quantum technology.
 
Understanding the effects of environments on a quantum system such as the mechanisms of decoherence and the dynamics of entanglement in terms of quantum open systems is both of fundamental interest in quantum foundation issues and of practical importance in quantum information sciences. The processes of decoherence renders a quantum system classical, thus severely undermines the feasibility of QIP. The multifarious behavior of quantum entanglement, this distinct feature of quantum mechanics and the unique resource for QIP, from its generation to decay and revival, need be understood thoroughly for the design and implementation of quantum computers and quantum communication protocols. The mastery of quantum control with feedback mechanisms for specific functions is the key to the success of quantum design and engineering. It is for this reason that this program on the frontier of quantum open systems focuses on these three key elements of quantum science and technology. 
 
 
 
This program aims to capture the most important developments in these areas of quantum open system achieved in the last five years and to lay out important issues to meet future challenges.  The program includes three major components: (a) Tutorials and lectures to introduce and educate a new generation of young researchers into these areas of research; (b) Seminars on the state-of-the-art by leading world experts; (c) A week-long workshop open to a wider spectrum of participants. The program on this theme at KITPC will provide a stimulating environment for young researchers to interact with world experts in this exciting research area and is expected to make an enduring impact on their future research careers.
 
The program will cover a broad range of theoretical topics as well as key experimental findings. The following topics will be addressed (but not limited to) in this program:
 
A. Dynamics of entanglement: Generation and transport
B. Decoherence and control of non-Markovian open systems
C. Coherent manipulation and control of entanglement
D. Decoherence and disentanglement of ``small” systems
E. Entanglement in the context of quantum field theory
F. Experimental probes and utilization of entanglement
G. Quantum trajectories and quantum feedback
H. Theory and experiments in quantum control