Suppression of Dephasing by Qubit Motion in Superconducting Circuits.
Phys Rev Lett
; 116(1): 010501, 2016 Jan 08.
Article
em En
| MEDLINE
| ID: mdl-26799006
ABSTRACT
We suggest and demonstrate a protocol which suppresses the low-frequency dephasing by qubit motion, i.e., transfer of the logical qubit of information in a system of n≥2 physical qubits. The protocol requires only the nearest-neighbor coupling and is applicable to different qubit structures. Our analysis of its effectiveness against noises with arbitrary correlations, together with experiments using up to three superconducting qubits, shows that for the realistic uncorrelated noises, qubit motion increases the dephasing time of the logical qubit as ân. In general, the protocol provides a diagnostic tool for measurements of the noise correlations.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Tipo de estudo:
Guideline
Idioma:
En
Revista:
Phys Rev Lett
Ano de publicação:
2016
Tipo de documento:
Article
País de afiliação:
Estados Unidos