Giant Rabi frequencies between qubit and excited hole states in silicon quantum dots

• URL: http://arxiv.org/abs/2411.05526v2
• Date: Tue, 04 Mar 2025 13:22:34 GMT
• Title: Giant Rabi frequencies between qubit and excited hole states in silicon quantum dots
• Authors: E. Fanucchi, G. Forghieri, A. Secchi, P. Bordone, F. Troiani,
• Abstract summary: We show that transitions involving the lowest excited states display Rabi frequencies that are several orders of magnitude larger than those occurring in the ground doublet.<n>A clear relation with the symmetries of the eigenstates emerges, as well as a wide tunability of the Rabi frequencies by means of the applied bias.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Holes in Si quantum dots are being investigated for the implementation of electrically addressable spin qubits. In this perspective, the attention has been focused on the electric-field induced transitions between the eigenstates belonging to the ground doublet. Here we theoretically extend the analysis to the first excited doublet. We show that - in a prototypical quantum dot structure - transitions involving the lowest excited states display Rabi frequencies that are several orders of magnitude larger than those occurring in the ground doublet. A clear relation with the symmetries of the eigenstates emerges, as well as a wide tunability of the Rabi frequencies by means of the applied bias. A preliminary discussion on the possible implications of the present results for multilevel manipulation schemes and for multi-hole qubit encodings is provided.

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