报告题目：Open and Hamiltonian dynamics in quantum many-body systems: quantum limits and emerging phenomena

报 告 人：Dario Poletti, Singapore University of Technology and Design and head of the Complex Quantum Systems group

报告时间：11月29日上午10：00

报告地点：物理系三楼报告厅

报告摘要：Ultracold atoms give a great insight into the world of quantum mechanics. We are going to present how the cleanness and tunability of these set-ups allow to study fascinating dynamical many-body phenomena. We will focus in particular on the observation of the Lieb-Robinson bound [1], the engineering of effective Hamiltonians [2] and the emergence of complex relaxation dynamics for quantum many-body systems [3-5]. References:

[1] M. Cheneau, P. Barmettler, D. Poletti, M. Endres, P. Schauß, T. Fukuhara, C. Gross, I. Bloch, C. Kollath, S. Kuhr, “Light-cone like spreading of correlations in a quantum many-body system”, Nature 481, 484 (2012)

[2] S. Greschner, G. Sun, D. Poletti, L. Santos, “Dynamical synthetic gauge fields using periodically modulated interactions”, arXiv:1311.3150 (2013)

[3] D. Poletti, J.-S. Bernier, A. Georges, C. Kollath, “Interaction-induced impeding of decoherence and anomalous diffusion”, Physical Review Letters 109, 045302 (2012)

[4] J.-S. Bernier, P. Barmettler, D. Poletti, C. Kollath, “Emergence of long-distance pair coherence through incoherent local environmental coupling”, Physical Review A 87, 063608 (2013) [5] D. Poletti, P. Barmettler, A. Georges, C. Kollath, “Emergence of glass-lilke dynamics for dissipative and strongly interacting bosons”, Physical Review Letters 111, 195301 (2013)