Atomtronics:: Ultracold-atom analogs of electronic devices
Atomtronics:: Ultracold-atom analogs of electronic devices
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DOI：
10.1103/physreva.75.023615
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发表时间：
2007-02-01
影响因子：
2.9
通讯作者：
Holland, M. J.
中科院分区：
文献类型：
--
作者：
Seaman, B. T.;Kramer, M.;Holland, M. J.
原子电子学专注于电子材料、设备和电路的原子类似物。晶格势中强相互作用的超冷玻色气体类似于固态晶体介质中的电子。由于多体能谱有间隙，晶格中的冷原子表现出绝缘体或导体性质。 P型和N型材料类似物是通过在晶格中引入杂质位点而产生的。通过原子线的电流是通过将线连接到原子电池而产生的，原子电池将两个触点保持在不同的化学势。具有强烈不对称电流-电压曲线的原子电子二极管的设计利用了相图中超流体和绝缘状态的存在。双极结型晶体管的原子模拟表现出大的负增益。我们的研究结果为更先进的原子电子设备和电路（例如放大器、振荡器和基本逻辑门）提供了构建模块。
Atomtronics focuses on atom analogs of electronic materials, devices, and circuits. A strongly interacting ultracold Bose gas in a lattice potential is analogous to electrons in solid-state crystalline media. As a consequence of the gapped many-body energy spectrum, cold atoms in a lattice exhibit insulatorlike or conductorlike properties. P-type and N-type material analogs are created by introducing impurity sites into the lattice. Current through an atomtronic wire is generated by connecting the wire to an atomtronic battery which maintains the two contacts at different chemical potentials. The design of an atomtronic diode with a strongly asymmetric current-voltage curve exploits the existence of superfluid and insulating regimes in the phase diagram. The atom analog of a bipolar junction transistor exhibits large negative gain. Our results provide the building blocks for more advanced atomtronic devices and circuits such as amplifiers, oscillators, and fundamental logic gates.