量子霍尔体系中的弹道三端口干涉逻辑门
Ballistic 3-port interferometric logic gates in the quantum Hall regime
摘要：
我们表明，一个3端口干涉仪，定义在一个二维电子气的量子点接触，工作在量子霍尔制度，可以实现不同的逻辑门在每个端口取决于载流子的能量和操作条件。在所有情况下，输入逻辑状态被编码在施加在量子点接触上的电势中，而输出逻辑状态被编码在每个端口处的总传输系数的值中。此外，这种紧凑配置的输出可以通过组合两个3端口干涉仪来重新编程。
英文摘要：
We show that a 3-port interferometer, defined by quantum point contacts in a two-dimensional electron gas, and working in the quantum Hall regime, can implement different logic gates at each port depending on the energy of charge carriers and the operating conditions. In all cases the input logic states are encoded in the potentials applied on the quantum point contacts, while the output logic states are encoded in the values of the overall transmission coefficients at each port. In addition, the output of such compact configurations can be reprogrammed by combining two 3-port interferometers.
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