Abstract
Abstract
We analyze the implementation of a fast nonadiabatic CZ gate between two transmon qubits with tunable coupling. The gate control method is based on a theory of dynamical invariants which leads to reduced leakage and robustness against decoherence. The gate is based on a description of the resonance between the
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and
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using an effective Hamiltonian with the six lowest energy states. A modification of the protocol allows us to take into account the higher-order perturbative corrections of this effective model. This enables a gate fidelity several orders of magnitude higher than other quasiadiabatic protocols, with gate times that approach the theoretical limit.
Funder
Comunidad de Madrid
Consejo Superior de Investigaciones Científicas
Ministerio de Ciencia, Innovación y Universidades
Subject
Electrical and Electronic Engineering,Physics and Astronomy (miscellaneous),Materials Science (miscellaneous),Atomic and Molecular Physics, and Optics
Cited by
1 articles.
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1. Archives of Quantum Computing: Research Progress and Challenges;Archives of Computational Methods in Engineering;2023-07-12