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arXiv 1709.08609cond-mat.mes-hall
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相位可调热逻辑:热计算

Phase-Tunable Thermal Logic: Computation with Heat

Federico Paolucci, Giampiero Marchegiani, Elia Strambini, Francesco Giazotto

摘要:

布尔代数是数学的一个分支,其中变量只能假定为真或假值,是经典计算的理论基础。布尔运算和电子开关电路之间的类比,由香农在1938年强调,为基于电子设备的现代计算铺平了道路。在令人兴奋的指数摩尔趋势之后,这种设备的计算能力的增长现在被由于计算任务引起的散热所阻碍,在芯片小型化之后非常苛刻。热量通常是一种有害的能量形式,它会增加系统的熵,降低逻辑运算的效率。在这里,我们提出了一个物理系统,能够执行热逻辑操作,通过扭转旧的热无序的缩影到一个新的热秩序的范例。我们通过对逻辑状态变量进行温度编码,并引入电子逻辑门的热对应物,为热计算奠定了基础。利用热偏置约瑟夫森结(JJ)中的量子效应,提出了一种功能完备的无耗散逻辑的可能实现。我们的架构可确保高工作稳定性和鲁棒性,开关频率可达GHz。

英文摘要:

Boolean algebra, the branch of mathematics where variables can assume only true or false value, is the theoretical basis of classical computation. The analogy between Boolean operations and electronic switching circuits, highlighted by Shannon in 1938, paved the way to modern computation based on electronic devices. The grow of computational power of such devices, after an exciting exponential -Moore trend, is nowadays blocked by heat dissipation due to computational tasks, very demanding after the chips miniaturization. Heat is often a detrimental form of energy which increases the systems entropy decreasing the efficiency of logic operations. Here, we propose a physical system able to perform thermal logic operations by reversing the old heat-disorder epitome into a novel heat-order paradigm. We lay the foundations of heat computation by encoding logic state variables in temperature and introducing the thermal counterparts of electronic logic gates. Exploiting quantum effects in thermally biased Josephson junctions (JJs), we propound a possible realization of a functionally complete dissipationless logic. Our architecture ensures high operation stability and robustness with switching frequencies reaching the GHz.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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