Venue: The physics of superfluid pairing in a mixture of a spin-polarized Fermi gas and a dipolar condensate

Speaker: Prof.  Hong Y. Ling, Rowan University

Time:  19 March 2012,15:30-16:30

Location: Room 201,  Academic Building 12,  Yuquan Campus

Abstract:

We consider a mixture of a spin-polarized Fermi gas and a dipolar Bose-Einstein condensate in which s-wave scattering between fermions and the quasiparticles of the dipolar condensate can result in an effective attractive Fermi-Fermi interaction anisotropic in nature and tunable by the dipolar interaction. We show that such an interaction can significantly increase the prospect of realizing a superfluid with a gap parameter characterized with a coherent superposition of all odd partial waves. We formulate, in the spirit of the Hartree-Fock-Bogoliubov mean-field approach, a theory which allows us to estimate the critical temperature when the anisotropic Fock potential is taken into consideration and study how to prepare the mixture in order to optimize the critical temperature at which such a superfluid emerges before the system starts to phase separate.
 

Biography:

Dr. Hong Y. Ling, currently a distinguished professor at Rowan University, has a strong local connection. He pursued his undergraduate study at Jiaxin Teacher’s College (now known as Huzhou University), Huzhou, China between 1977-1980. He taught at Anji 2nd High School, Anji, Zhejing Province for three years between 1980 and 1983. Dr. Hong Y. Ling received his M. S. from Xian Institute of Optics and Fine Mechanics, Academia Sinica, Xian in 1986, and his Ph. D from Drexel University, Philadelphia, in 1991. After taking a one-year visiting professor’s position at Wilkes-Barre University, Wilkes-Barre, Pennsylvania, he joined Rowan University, Glassboro, New Jersey, where he has remained as a full professor since 2001. (Or Dr. Hong Y. Ling received his undergraduate education from Jiaxin Teacher's College (now known as Huzhou University) in 1980, M. S. from Xian Institute of Optics and Fine Mechanics in 1986, and Ph. D from Drexel University, Philadelphia, in 1991. After taking a one-year visiting professor’s position at Wilkes-Barre University, Wilkes-Barre, Pennsylvania, he joined Rowan University, Glassboro, New Jersey, where he has remained as a full professor since 2001.) His research in his early career fell in the realm of laser physics and quantum optics, and has evolved, in recent years, into ultracold atomic physics, a highly interdiciplinary area overlapping between AMO (atomic, molecular and optical physics) and condensed matter physics. He has published more than 30 papers, most of which appeared in Physical Review. The primary focus of his current research is on multi-component quantum gases containing both atomic and molecular species. His research is jointly funded by the US National Science Foundation and US Army Research Office.