Fermionization of two distinguishable fermions.
Fermionization of two distinguishable fermions.
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DOI：
10.1103/physrevlett.108.075303
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发表时间：
2011-05
影响因子：
8.6
通讯作者：
G. Zürn;F. Serwane;T. Lompe;A. Wenz;M. Ries;J. Bohn;S. Jochim
中科院分区：
文献类型：
--
作者：
G. Zürn;F. Serwane;T. Lompe;A. Wenz;M. Ries;J. Bohn;S. Jochim
我们研究了一维谐振势中两个可区分的费米子系统。该系统具有一个特殊的性质，即粒子间相互作用的任意值都存在解析解。我们调整了相互作用强度，并将测量的系统性质与理论预测进行了比较。对于发散相互作用强度，两个可区分粒子的波函数的能量和平方模与两个不相互作用的完全相同的费米子系统相同。这被称为费米化。我们通过直接比较两个相互作用强度发散的可区分费米子和两个相同势下的完全相同的费米子，观察到了这一现象。我们观察到实验和理论之间有很好的一致性。通过添加更多的粒子，我们的系统可以用作更复杂系统的量子模拟器，在这些系统中没有理论解。
We study a system of two distinguishable fermions in a 1D harmonic potential. This system has the exceptional property that there is an analytic solution for arbitrary values of the interparticle interaction. We tune the interaction strength and compare the measured properties of the system to the theoretical prediction. For diverging interaction strength, the energy and square modulus of the wave function for two distinguishable particles are the same as for a system of two noninteracting identical fermions. This is referred to as fermionization. We have observed this phenomenon by directly comparing two distinguishable fermions with diverging interaction strength with two identical fermions in the same potential. We observe good agreement between experiment and theory. By adding more particles our system can be used as a quantum simulator for more complex systems where no theoretical solution is available.