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Quantum Information Processing

Room temperature CNOT operation in a diluted magnetic semiconductor quantum dot

Manish Kumar Mehta, J. T. Andrews, Pratima Sen

Published May 1, 2021• 0 citations
Publisher
DOI
10.1007/s11128-021-03100-5

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We define the qubit as a pair of singlet and triplet states of two electrons in a He-type quantum dot (QD) placed in a diluted magnetic semiconductor (DMS) medium. The molecular field is here essential as it removes the degeneracy of the triplet state and strongly enhances the Zeeman splitting. Methods of qubit rotation as well as two-qubit operations are suggested. The system of a QD in a DMS is described in a way which allows an analysis of the decoherence due to spin waves in the DMS subsystem.