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Nanomechanical computers promise robust, low energy information processing.However, to date, electronics have generally been required to interconnectgates, while no scalable, purely nanomechanical approach to computing has beenachieved. Here, we demonstrate a nanomechanical logic gate in a scalablearchitecture. Our gate uses the bistability of a nonlinear mechanical resonatorto define logical states. These states are efficiently coupled into and out ofthe gate via nanomechanical waveguides, which provide the mechanical equivalentof electrical wires. Crucially, the input and output states share the samespatiotemporal characteristics, so that the output of one gate can serve as theinput for the next. Our architecture is CMOS compatible, while realisticminiaturisation could allow both gigahertz frequencies and an energy cost thatapproaches the fundamental Landauer limit. Together this presents a pathwaytowards large-scale nanomechanical computers, as well as neuromorphic networksable to simulate computationally hard problems and interacting many-bodysystems.

Scalable nanomechanical logic gate