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The 2022 Nobel Prize in Physics was awarded to three physicists for experiments with entangled photons, establishing the violation of Bell inequalities and pioneering quantum information science. But the strange properties of quantum entanglement in the quantum world and the physics behind it have not been fully solved. Moreover, the underlying origin of probability related to quantum measurement interpretation, including the physical mechanisms of quantum entanglement, was not settled by these experimental results. In quantum information science, quantum entanglement provides a useful and unique resource in realizing quantum cryptography, quantum teleportation and quantum parallel computing. On the other hand, quantum entanglement is also the source of quantum decoherence which is the main obstacle for building practically useful quantum computers. In this talk, the physical problems related to quantum entanglement and the possible challenges to the future development of quantum science and technology will be discussed.
Wei-Min Zhang is a Distinguished Professor of the Physics Department at Taiwan Cheng Kung University (NCKU). He received his PhD in theoretical physics from Drexel University, USA, in 1989. He was Post-Doctoral Research Fellows at the University of Washington in Seattle (1990-1991), and at the Ohio-State University (1992-1993). From 1994 to 1998, he was a Visiting Associate Professor at the Institute of Physics of Academic Sinica at Taipei and became a Full Professor in 1999 and then, a Distinguished Professor in 2004 at NCKU. He served as the Director of the Center for Quantum Information Science from 2004 to 2018 and Vice Dean of the College of Science from 2019 to 2022. His research interests cover many different fields in theoretical physics, including quantum information and quantum computing, mesoscopic physics, quantum optics, open quantum systems and quantum decoherence, quantum transport, strongly correlated many-body physics, quantum chromodynamics (QCD), quantum field theory, quantum chaos, nuclear physics, quantum phase transitions, and quantum thermodynamics. He developed several theories in various research fields, including a quantum transport field theory for heavy-ion collisions, a two-component field theory of light-front QCD, the fermionic exact master equation of nanoelectronics, the bosonic transport theory of nanophotonics, the general non-Markovian theory for open quantum systems, the quantum dissipative theory of topological states, and nonequilibrium theory for strong-coupling quantum thermodynamics. (http://ww2.phys.ncku.edu.tw/~wzhang/).