报告题目:Engineering Fulde-Ferrell Superfluids in Degenerate Fermi Gases with Synthetic Gauge Fields
报告人：张传伟 教授
报告时间：下午3:00
报告地点：理学楼A110
题目：Engineering Fulde-Ferrell Superfluids in Degenerate Fermi Gases with Synthetic Gauge Fields
报告人：张传伟 教授 (华盛顿州立大学物理和天文系)
地点：浙工大屏峰校区理学楼A110
时间：2015年5月28日 下午3:00
摘要：Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) phase was first predicted in two-dimensional superconductors about 50 years ago, but so far unambiguous experimental evidence is still lacking. The recently experimentally realized spin-imbalanced Fermi gases may potentially unveil this elusive state, but they require very stringent experimental conditions. In this talk, I will discuss a new route for generating stable FF phases through single particle band dispersion engineering using the recently experimentally generated synthetic gauge fields, such as artificial spin-orbit coupling or band hybridization in driven optical lattices. I will show that such FF superfluids can support topological quantum excitations such as Majorana and Weyl fermions.
报告人简介
Chuanwei Zhang
Professor
Department of Physics and Astronomy, Washington State University at Pullman
Chuanwei Zhang received his BS in Physics from University of Science and Technology of China in 2000 and PhD in Physics from the University of Texas at Austin in 2005. After two and a half year’s postdoctoral training at the University of Maryland at College Park, he joined Washington State University in 2008 as an assistant professor. In 2012, he moved to the University of Texas at Dallas as an associate professor. He was a recipient of DARPA Young Faculty Award in 2010. He has published over 70 peer-reviewed articles, including 3 in Nature Physics and Nature Communications, and 22 in Physical Review Letters
近期发表的文章
[1] Z. Zheng, M. Gong, X. Zhou, C. Zhang, and G.-C. Guo, Route to Observable Fulde-Ferrell-Larkin-Ovchinnikov Phases in 3D Spin-Orbit Coupled Degenerate Fermi Gases, Phys. Rev. A (Rapid Communication) 87, 031602 (2013).
[2] C. Qu, Z. Zheng, M. Gong, Y. Xu, L. Mao, X. Zou, G.-C. Guo, C. Zhang, Topological Superfluids with Finite Momentum Pairing and Majorana Fermions, Nature Communications 4, 2710 (2013).
[3] Y. Xu, C. Qu, M. Gong, C. Zhang, Competing superfluid orders in spin-orbit coupled fermionic cold atom optical lattices, Phys. Rev. A 89, 013607 (2014).
[4] Y. Xu, R. Chu, C. Zhang, Anisotropic Weyl Fermions from Quasiparticle Excitation Spectrum of a 3D Fulde-Ferrell Superfluid, Phys. Rev. Lett. 112, 136402 (2014) PRL Editors' Suggestions
[5] Y. Xu, C. Zhang, Berezinskii-Kosterlitz-Thouless Phase Transition in 2D Spin-Orbit Coupled FF Superfluids, Phys. Rev. Lett. 114, 110401 (2015).
[6] Y. Xu, F. Zhang, C. Zhang, Structured Weyl Points in Fulde-Ferrell Superfluids, arXiv:1411.7316
[7] Z. Zheng, C. Qu, X. Zou, C. Zhang, Floquet Fulde-Ferrell-Larkin-Ovchinnikov superfluids and Majorana fermions in a shaken fermionic optical lattice, arXiv:1408.5824
[8] Z. Zheng, C. Qu, X. Zou, C. Zhang, Fulde-Ferrell superfluids without spin-imbalance in three-dimensional driven spinful fermionic optical lattices, arXiv:1501.00448