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Adiabatic pipelining: a key to ternary computing with quantum dots

机译：绝热流水线：量子点三元计算的关键

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摘要

The quantum-dot cellular automaton (QCA), a processing platform based on interacting quantum dots, was introduced by Lent in the mid-1990s. What followed was an exhilarating period with the development of the line, the functionally complete set of logic functions, as well as more complex processing structures, however all in the realm of binary logic. Regardless of these achievements, it has to be acknowledged that the use of binary logic is in computing systems mainly the end result of the technological limitations, which the designers had to cope with in the early days of their design. The first advancement of QCAs to multi-valued (ternary) processing was performed by Lebar Bajec et al, with the argument that processing platforms of the future should not disregard the clear advantages of multi-valued logic. Some of the elementary ternary QCAs, necessary for the construction of more complex processing entities, however, lead to a remarkable increase in size when compared to their binary counterparts. This somewhat negates the advantages gained by entering the ternary computing domain. As it turned out, even the binary QCA had its initial hiccups, which have been solved by the introduction of adiabatic switching and the application of adiabatic pipeline approaches. We present here a study that introduces adiabatic switching into the ternary QCA and employs the adiabatic pipeline approach to successfully solve the issues of elementary ternary QCAs. What is more, the ternary QCAs presented here are sizewise comparable to binary QCAs. This in our view might serve towards their faster adoption.
机译：Lent在1990年代中期引入了基于量子点相互作用的处理平台量子点细胞自动机（QCA）。随后是生产线发展，逻辑功能完整的集合以及更复杂的处理结构的令人振奋的时期，然而所有这些都在二进制逻辑领域。无论这些成就如何，必须承认，二进制逻辑的使用主要是在计算系统中技术限制的最终结果，设计人员在设计初期就必须应对这些限制。 Lebar Bajec等人将QCA首次推广到多值（三元）处理中，认为未来的处理平台不应忽略多值逻辑的明显优势。但是，一些二元QCA对于构建更复杂的处理实体是必需的，与二元对等QCA相比，其大小显着增加。这在某种程度上抵消了进入三元计算域所获得的优势。事实证明，甚至二进制QCA都有其最初的问题，这已经通过引入绝热切换和绝热流水线方法的应用得以解决。我们在此提出一项将绝热切换引入三元QCA并采用绝热流水线方法成功解决基本三元QCA问题的研究。而且，此处介绍的三元QCA在大小上可与二元QCA相媲美。我们认为，这可能有助于更快地采用它们。

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