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Seminar of Center for Quantum Science and Engineering (CQSE) Title: Simulating Quantum Magnets with Trapped Ions Time: 11/6/2009 (Fri.) 2:30 PM~3:30 PM Place: RM 112, New Physics Building Speaker: Dr. Ming-Shien Chang (張銘顯), Institute of Atomic and Molecular Sciences, Academia Sinica Abstract: The magnetic order of interacting quantum spins is of fundamental interest in many areas of physics, and it is related to several exotic material phenomena, such as quantum phase transitions, magnetic frustration, and high Tc superconductivity. Theoretical studies on those exotic phenomena would demand a quantum computer or a quantum simulator. Trapped ion systems has recently been identified as a promising physical implementation of a problem specific quantum simulator, thanks to the strong and tunable graph couplings between ions and its advanced status on quantum computation applications. We will discuss our most recent results of quantum simulations of Ising spin in a transverse magnetic field with three trapped Ytterbium ions. We will also discuss on how this system may be scaled up to a much larger number of spins.