Because of their high controllability, ultra-cold atoms offer a great platform to simulate certain problems arise from condense matter system. In our lab, a variety of cooling techniques are used to cool down Rubidium 87 to make Bose-Einstein Condensate. The BEC is then transferred into certain system of a specific Hamiltonian which is induced by Raman couplings, optical lattice, etc. We then use this as a simulation platform to study Gauge field and Spin-orbit coupling.
Our current research interest is topological phase transition and Exotic topological quantum states. There are intriguing topological phenomenon observed in condense matter system in recent years. Spin-orbit coupling is believed to be essential in understanding topological quantum states and a new class of topological materials. Thus, spin-orbit coupling system of the cold atoms has a great potential to study exotic quantum states and is promising to reveal physics beyond traditional condense matter system.
- Highly Controllable and Robust 2D Spin-Orbit Coupling for Quantum Gases. Physical Review Letters 121, 150401 (2018).
- Magnetic-enhanced modulation transfer spectroscopy and laser locking for 87 Rb repump transition. Optics Express 26, 27773 (2018).
- Precision mapping the topological bands of 2D spin-orbit coupling with microwave spin-injection spectroscopy. Science Bulletin 63, 1464-1469 (2018).
- Uncover Topology by Quantum Quench Dynamics. Physical Review Letters 121, 250403 (2018).
- Realization of two-dimensional spin-orbit coupling for Bose-Einstein condensates. Science 354, 83-88 (2016).
- Softening of Roton and Phonon Modes in a Bose-Einstein Condensate with Spin-Orbit Coupling. Physical Review Letters 114, 105301 (2015).
- Experimental determination of the finite-temperature phase diagram of a spin-orbit coupled Bose gas. Nature Physics 10, 314-320 (2014).
- Stability of excited dressed states with spin-orbit coupling. Physical Review A 87, 011601 (2013).
- Collective Dipole Oscillations of a Spin-Orbit Coupled Bose-Einstein Condensate. Physical Review Letters 109, 115301 (2012).