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Temperature Effect on the Operation of Elementary Quantum-Dot Spin Gates by the Example of the NOT-AND Gate

A. V. Krasheninnikov·R. A. Koltsov
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Abstract

The effect of temperature on the operation of the elementary quantum-dot spin gates for single-electron computing is studied theoretically within the framework of the Hubbard model by the example of the NOT-AND gate. The calculated values of the uniform external magnetic field necessary to realize the whole truth table proved to be unreasonably high for the implementation of the NOT-AND logical function even at the liquid helium temperature. This result appears to be common to all spin gates. Thus, finite temperatures seem to be a serious obstacle for the practical realization of ground state calculations in quantum dot spin gates.

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A. V. Krasheninnikov, R. A. Koltsov. 1998-10-26. Temperature Effect on the Operation of Elementary Quantum-Dot Spin Gates by the Example of the NOT-AND Gate. https://arxiv.org/abs/cond-mat/9810346

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