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- W4295677907 abstract "A key challenge for semiconductor quantum-dot charge qubits is the realization of long-range qubit coupling and performing high-fidelity gates based on it. Here, we describe a different type of charge qubit formed by an electron confined in a triple-quantum-dot system, enabling single and two-qubit gates working in the dipolar and quadrupolar detuning sweet spots. We further present the form for the long-range dipolar coupling between the charge qubit and the superconducting resonator. Based on the hybrid system composed of the qubits and the resonator, we present two types of entangling gates: the dynamical iswap gate and holonomic entangling gate, which are operating in the dispersive and resonant regimes, respectively. We find that the fidelity for the iswap gate can reach a fidelity higher than 99% for the noise level typical in experiments. Meanwhile, the fidelity for the holonomic gate can surpass 98% if the anharmonicity in the resonator is large enough. Our proposal offers an alternative, useful way to build up high-fidelity quantum computation for charge qubits in the semiconductor quantum dot." @default.
- W4295677907 created "2022-09-14" @default.
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- W4295677907 date "2022-09-12" @default.
- W4295677907 modified "2023-10-10" @default.
- W4295677907 title "Coupling two charge qubits via a superconducting resonator operating in the resonant and dispersive regimes" @default.
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- W4295677907 doi "https://doi.org/10.1103/physreva.106.032608" @default.
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