[Seminar] Trap-induced shape resonances in an ultracold system of an atom and static impurities by Professor Zbigniew Idziaszek
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Abstract
Hybrid systems of ultracold atoms and trapped ions or Rydberg atoms can be useful for quantum simulation purposes. By tuning the geometric arrangement of the impurities it is possible to mimic solid state and molecular systems. Here we study a single trapped atom interacting with a set of arbitrarily arranged static impurities and show that the problem admits an analytical solution. First I will discuss in details the case of two impurities, finding multiple trap-induced resonances which can be used for entanglement generation.
In the second part of the talk I will consider the motion atoms in quasi-1D geometry in the presence of a chain of equally spaced impurities. The impurities form a periodic lattice and induce a band structure in the atoms. Such a setup can be realized for instance in a hybrid system composed of a one-dimensional crystal of trapped ions immersed into a cloud of ultracold atoms. Our results serve as a building block for the studies of quantum dynamics of more complex systems.
Biography
Zbigniew Idziaszek is an adjunct professor at the University of Warsaw. He received his PhD from the University of Warsaw in 2002, held postdoctoral positions at the University of Hannover (2002-2003) and at the University of Trento (2004-2006), and obtained habilitation degree from the University of Warsaw in 2010. He specializes in the atomic, molecular and optical physics, and his research focus on quantum degenerate gases and ultracold collisions. His recent publications include articles on theory of atom-ion collisions and theory of reactive collisions at ultralow temperatures. He has published 58 journal articles, including one Nature Communications, 10 Physical Review Letters and one paper featured in the Physical Review Focus.
Intra-Group Category
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