Center of Mass Momentum Dependent Interaction Between Ultracold Atoms

Speaker: Prof. Peng Zhang (张芃教授 ) (Physics department, Renmin University of China.)

Time: March 16, 2017 16:00

Place: 郑裕彤讲堂

Abstract:We show that a new type of two-body interaction, which depends on the momentum of the center of mass (CoM) of these two particles, can be realized in ultracold atom gases with a laser-modulaed magnetic Feshbach resonance (MFR). Here the MFR is modulated by two laser beams propagating along different directions, which can induce Raman transition between two-body bound states. The Doppler effect causes the two-atom scattering length to be strongly dependent on the CoM momentum of these two atoms. As a result, the effective two-atom interaction is CoM-momentum dependent, while the one-atom free Hamiltonian is still the simple kinetic energy p2/(2m).






Sep. 1995‐Jul. 1999 Department of Physics, Beijing Normal University, Bachelor of Science

Sep. 1999‐Mar. 2005 Institute of Theoretical Physics, CAS,  P. H. D. Advised by Prof. Chang‐pu, Sun.



May. 2004‐Jun. 2004 School of Physics, The University of Hong Kong Visiting Student. Collaborate with Prof. Z.D.Wang

Apr. 2005‐Spt. 2007 School of Physics, Georgia Institute of Technology Postdoctoral Fellow. Collaborate with Prof. Li You

Oct. 2007‐Sep. 2010 UEDA Macroscopic Quantum Control Project, Postdoctoral Fellow. Collaborate with Prof. M.Ueda.

Oct. 2010-now: professor in physics department, Renmin University of China.



 a) Few-body problems in ultracold atom physics.     

 b) Quantum optics.