Pantheon SEMPARIS Le serveur des séminaires parisiens Paris

Status Confirmed
Seminar Series SEM-LPTM-UCP
Subjects cond-mat
Date Thursday 24 May 2018
Time 14:00
Institute LPTM
Seminar Room 4.13 St Martin II
Speaker's Last Name Roux
Speaker's First Name Guillaume
Speaker's Email Address
Speaker's Institution LPTMS Université Paris Sud
Title Artificial spin models: examples from topological bosons and Rydberg atoms
Abstract The goal of this seminar is to present how spin models are relevant in the physics of quantum simulators through two examples. In the first one, we show that the strong interacting limit of a topological Bose-Hubbard model with two species maps onto a 2D XY spin model with frustrated couplings on the honeycomb lattice. This model displays an exotic phase thats breaks both parity and time reversal symmetry through the stabilization of a chiral order parameter. While the ground-state remains gapped and the original bosonic model is topological, we find a zero Chern number for the groundstate. In the second example, we discuss how spin models are realized in Rydberg based quantum simulators. We discuss a proposal envisionned by colleagues at College de France and perspectives on some relevant information that could be extracted from the Loschmidt echo.
arXiv Preprint Number

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