Studying Quantum Magnetism with few cold atoms

报告人
Dr. Gerhard Zürn
单位
the ultracold atom labs of Matthias
时间
2016-03-08 (周二) 14:00
地点
上海学院331会议室
摘要

Models describing quantum magnetism are of large interest as they can potentially shed light on exotic properties of matter such as on unconventional superconductivity. To study such models we aim for a bottom-up approach in which we assemble a many-body state from its basic building block using few cold atoms.
We present how we deterministically prepare such a building block, a singlet state of two spin-1/2 fermions in a double well potential. By tuning the system into a regime where the superexchange energy is the dominant energy scale we realize the smallest possible Heisenberg Hamiltonian. Combining several of such singlet states should allow us to study quantum magnetism in larger systems.