Copyright c ○ 2013 Yoji Kubota and Takashi Odagaki. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. We present conceptual models for fundamental logic gates using solitons as bit pulses in the Toda lattice. The transmission rate of the soliton is controllable by another soliton and the control of the soliton transmission is applicable to a NOT gate. Two-input system with appropriate transmission filters were constructed to realize AND and OR gates. We numerically demonstrated the soliton transmissions on these systems. The efficiency of our logic gates was improved for larger amplitude of the input solitons.
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