Quantum-dot fabrication and characterization is a well-establishedtechnology, which is used in photonics, quantum optics and nanoelectronics.Four quantum-dots placed at the corners of a square form a unit cell, which canhold a bit of information and serve as a basis for Quantum-dot CellularAutomata (QCA) nanoelectronic circuits. Although several basic QCA circuitshave been designed, fabricated and tested, proving that quantum-dots can formfunctional, fast and low-power nanoelectornic circuits, QCA nanoelectronicsstill remain at its infancy. One of the reasons for this is the lack of designautomation tools, which will facilitate the systematic design of large QCAcircuits that contemporary applications demand. Here we present novel,programmable QCA circuits, which are based on crossbar architecture. Thesecircuits can be programmed to implement any Boolean function in analogy to CMOSFPGAs and open the road that will lead to full design automation of QCAnanoelectronic circuits. Using this architecture we designed and simulated QCAcircuits that proved to be area efficient, stable and reliable.
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