Abbreviated Journal Title
Phys. Rev. B
Keywords
OSCILLATIONS; SPIN; Physics, Condensed Matter
Abstract
We discuss decoherence due to electromagnetic fluctuations in charge qubits formed by two lateral quantum dots. We use effective circuit model to evaluate correlations of voltage fluctuations in the qubit setup. These correlations allows us to estimate energy (T(1)) and phase (T(2)) relaxation times of the qubit system. Our theoretical estimate of the quality factor due to dephasing by electromagnetic fluctuations yields values much higher than those found in recent experiments, indicating that other sources of decoherence play a dominant role.
Journal Title
Physical Review B
Volume
82
Issue/Number
12
Publication Date
1-1-2010
Document Type
Article
Language
English
First Page
12
WOS Identifier
ISSN
1098-0121
Recommended Citation
Valente, Diego C. B.; Mucciolo, Eduardo R.; and Wilhelm, F. K., "Decoherence by electromagnetic fluctuations in double-quantum-dot charge qubits" (2010). Faculty Bibliography 2010s. 879.
https://stars.library.ucf.edu/facultybib2010/879
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