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Superconducting Qubits

Systematic Magnus-based approach for suppressing leakage and non-adiabatic errors in quantum dynamics

arXiv
Authors: Hugo Ribeiro, Alexandre Baksic, Aashish A. Clerk

Year

2016

Paper ID

43148

Status

Preprint

Abstract Read

~2 min

Abstract Words

96

Citations

N/A

Abstract

We present a systematic, perturbative method for correcting quantum gates to suppress errors that take the target system out of a chosen subspace. It addresses the generic problem of non-adiabatic errors in adiabatic evolution and state preparation, as well as general leakage errors due to spurious couplings to undesirable states. The method is based on the Magnus expansion: by correcting control pulses, we modify the Magnus expansion of an initially-given, imperfect unitary in such a way that the desired evolution is obtained. Applications to adiabatic quantum state transfer, superconducting qubits and generalized Landau-Zener problems are discussed.

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  • This paper contributes to the Superconducting Qubits research area in the Quantum Articles archive.
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  • We present a systematic, perturbative method for correcting quantum gates to suppress errors that take the target system out of a chosen subspace.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1610.01105 [2] arXiv https://arxiv.org/abs/1610.01105 [3] Publisher https://arxiv.org/abs/1610.01105

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