期刊
NATURE PHYSICS
卷 10, 期 2, 页码 110-115出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/nphys2824
关键词
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资金
- National Basic Research Program of China [2011CB921601, 2011CB921500, 2012CB922104]
- NSFC [11234008, 11004118, 11174176, 11222430]
- NSFC Project for Excellent Research Team [61121064]
- NCET Program
- Tsinghua University Initiative Scientific Research Program
- University of Hong Kong
The search for topological superconductors is a challenging task1,2. One of the most promising directions is to use spinorbit coupling through which an s-wave superconductor can induce unconventional p-wave pairing in a spin-polarized metal3,4. Recently, synthetic spin-orbit couplings have been realized in cold-atom systems5-16 where instead of a proximity effect, s-wave pairing originates from a resonant coupling between s-wave molecules and itinerant atoms17. Here we demonstrate a dynamic process in which spin-orbit coupling coherently produces s-wave Feshbach molecules from a fully polarized Fermi gas, and induces a coherent oscillation between these two. This demonstrates experimentally that spin-orbit coupling does coherently couple singlet and triplet states, and implies that the bound pairs of this system have a triplet p-wave component, which can become a topological superfluid by further cooling to condensation and confinement to one dimension.
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