论文标题
两分量玻色子的新型量子阶段与合成维度成对跳跃
Novel quantum phases of two-component bosons with pair hopping in synthetic dimension
论文作者
论文摘要
我们研究了与合成维度的配对相互作用的两组分（或伪胞素1/2）玻色子，还提供了在方形光学晶格上可行的实验方案。先前的研究表明，具有现场种间相互作用的两个组分玻色子只能产生非平凡的种间配对超氟（超级漏斗或配对 - 共氟藻）状态。相比之下，除了种间配对超流体外，我们还通过考虑这种额外的跳跃相互作用来揭示两个新阶段。这些新型的阶段是种内配对的超流体（分子超流体）和一个异国情调的非全能莫特绝缘子，每个物种在每个地点都显示一个非直集原子数，但总原子数的整数。
We study two-component (or pseudospin-1/2) bosons with pair hopping interactions in synthetic dimension, for which a feasible experimental scheme on a square optical lattice is also presented. Previous studies have shown that two-component bosons with on-site interspecies interaction can only generate nontrivial interspecies paired superfluid (super-counter-fluidity or pair-superfluid) state. In contrast, apart from interspecies paired superfluid, we reveal two new phases by considering this additional pair hopping interaction. These novel phases are intraspecies paired superfluid (molecular superfluid) and an exotic non-integer Mott insulator which shows a non-integer atom number at each site for each species, but an integer for total atom number.
