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- W4315588975 abstract "Decoherence is an inevitable problem when targeting to increase the fidelity of quantum gates, and thus is one of the main obstacles for large-scale quantum computation. The longer a gate operation is, the more decoherence-induced gate infidelity will be. Therefore, how to shorten the gate time becomes an urgent problem to be solved. To this end, time-optimal control based on solving the quantum brachistochron equation is a straightforward solution. Here, based on time-optimal control, we propose a scheme to realize universal quantum gates on superconducting qubits, in a two-dimensional square lattice configuration, and the two-qubit gate fidelity can be higher than $99.7%$. Meanwhile, we can further accelerate the z-axis gate considerably by adjusting the time-independent detuning. Finally, in order to reduce the influence of the dephasing error, decoherence free subspace is also incorporated in our physical implementation. Therefore, we present a promising fast scheme for large-scale quantum computation." @default.
- W4315588975 created "2023-01-11" @default.
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- W4315588975 date "2023-01-09" @default.
- W4315588975 modified "2023-09-26" @default.
- W4315588975 title "Time-optimal universal quantum gates on superconducting circuits" @default.
- W4315588975 doi "https://doi.org/10.48550/arxiv.2301.03334" @default.
- W4315588975 hasPublicationYear "2023" @default.
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