2016-2017学年春季学期.pdf

复旦大学物理系物质科学报告 Physics Department Colloquium Quantum-Gas Microscopes -- Quantum-Simulation with Single-Particle Access Prof. Stefan Kuhr University of Strathclyde , UK Abstract: The possibility to trap atoms in well-controlled engineered environments in optical lattices has proved to be a powerful tool for quantum-simulation of strongly correlated quantum systems. The great challenge to obtain full single-site resolution and single-atom control in optical lattices was overcome by the development of quantum-gas microscopes [1] and I will present an overview of the recent developments in this field [2]. Fluorescence imaging of atoms has made it possible to directly observe bosonic and fermionic many-body quantum systems with single-atom resolution in an unprecedented way, giving access to, e.g., in-situ measurements of temperature and entropy distributions, direct observation of correlations and their spreading, or the build-up of entanglement. I will also present how we achieved single-atom-resolved fluorescence imaging of fermionic potassium-40 atoms using electromagnetically-induced-transparency (EIT) cooling [3], and a new way of Raman gray-molasses cooling on the D2-line [4], and report on our progress towards the study of strongly correlated fermionic quantum systems and their out-of-equilibrium dynamics. References [1] W. Bakr et al., Nature 462, 74 (2009); J. Sherson et al., Nature 467, 68 (2010). [2] S. Kuhr, Natl. Sci. Rev. 3, 170 (2016). [3] E. Haller et al., Nature Physics 11, 738 (2015). [4] G. Bruce et al., J. Phys. B: At. Mol. Opt. Phys. 50, 095002 (2017). Time: 2:00pm, Thursday, June 29, 2017 Location: Physics Building, Room 403 (Cookies and coffee are served from 1:30 pm)