Deterministic Preparation of a Tunable Few-Fermion System
Deterministic Preparation of a Tunable Few-Fermion System
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DOI：
10.1126/science.1201351
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发表时间：
2011-04-15
期刊：
影响因子：
56.9
通讯作者：
Jochim, S.
中科院分区：
文献类型：
--
作者：
Serwane, F.;Zuern, G.;Jochim, S.
由少量相互作用的费米子组成的系统是物质的构建块，其中原子和原子核是最突出的例子。我们创建了一个少体量子系统，使用光学偶极子陷阱中的超冷费米子原子完全控制其量子态。由 1 到 10 个粒子组成的基态系统的保真度接近 90%。我们可以使用费什巴赫共振将粒子间相互作用调整为任意值，并观察到一对相互排斥的原子的相互作用引起的能量转移。这项工作有望实现强相关少体系统的量子模拟。
Systems consisting of few interacting fermions are the building blocks of matter, with atoms and nuclei being the most prominent examples. We have created a few-body quantum system with complete control over its quantum state using ultracold fermionic atoms in an optical dipole trap. Ground-state systems consisting of 1 to 10 particles are prepared with fidelities of similar to 90%. We can tune the interparticle interactions to arbitrary values using a Feshbach resonance and have observed the interaction-induced energy shift for a pair of repulsively interacting atoms. This work is expected to enable quantum simulation of strongly correlated few-body systems.