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Springer series on atomic, optical, and plasma physics

One-Photon Decay of Single- and Double-Hole States

M. Ya. Amusia, Larissa V. Chernysheva

Published Jan 1, 2021• 1 citation
Publisher
DOI
10.1007/978-3-030-85143-9_16

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Abstract Strong charge-photon coupling allows the coherent coupling of a charge qubit, realized by a single charge carrier (either an electron or a hole) in a double quantum dot, to photons of a microwave resonator. Here, we theoretically demonstrate that, in the dispersive regime, the photons can mediate both an i SWAP gate as well as a i SWAP gate between two distant charge qubits. We provide a thorough discussion of the impact of the dominant noise sources, resonator damping and charge qubit dephasing on the average gate fidelity. Assuming a state-of-the art resonator decay rate and charge qubit dephasing rate, the predicted average gate fidelities are below 90%. However, a decrease of the charge qubit dephasing rate by one order of magnitude is conjectured to result in gate fidelities surpassing 95%.