光晶格中的深束缚超冷分子
Deeply bound ultracold molecules in an optical lattice
摘要：
我们证明了在光晶格存在下，超冷分子有效地转移到单重基态势的深束缚振转能级。整个分子的生成效率为25%，转振能级的转移效率为25%。|v=73，J=2> 80%以上。我们发现，|v=73，J=2>被捕获在光晶格中，受到晶格光的光激发的限制。对于15个原子反冲能的晶格深度，分子捕获时间约为20 ms。我们通过晶格相位和振幅调制技术确定了捕获频率。现在可以将分子转移到振转基态|v=0，J=0>，在光晶格的存在下。
英文摘要：
We demonstrate efficient transfer of ultracold molecules into a deeply bound rovibrational level of the singlet ground state potential in the presence of an optical lattice. The overall molecule creation efficiency is 25%, and the transfer efficiency to the rovibrational level |v=73,J=2> is above 80%. We find that the molecules in |v=73,J=2> are trapped in the optical lattice, limited by optical excitation by the lattice light. The molecule trapping time for a lattice depth of 15 atomic recoil energies is about 20 ms. We determine the trapping frequency by the lattice phase and amplitude modulation technique. It will now be possible to transfer the molecules to the rovibrational ground state |v=0,J=0> in the presence of the optical lattice.
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