Decoherence from ensembles of two-level fluctuators

By J. Schriefl, Y. Makhlin, A. Shnirman, G. Schön. 2005

168 citations recorded by the source corpus.

1/f noise, the major source of dephasing in Josephson qubits, may be produced by an ensemble of two-level systems. Depending on the statistical properties of their distribution, the noise distribution can be Gaussian or non-Gaussian. The latter situation is realized, for instance, when the distribution of coupling strengths has a slowly decaying power-law tail. In this regime, questions of self-averaging and sample-to-sample fluctuations become crucial. We study the dephasing process for a class of distribution functions and analyse the self-averaging properties of the results.

Subfields: Artificial Intelligence, Statistical and Nonlinear Physics, Statistics and Probability

View Paper: https://www.semanticscholar.org/paper/1b32b41c4fe114462fbec7e85f4dfc8a545a2189

How researchers see this paper

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In Artificial Intelligence

1. Mikhail D. Lukin
2. Peter Zoller
3. J. Doyle
4. A. André
5. Peter Rabl
6. D. DeMille
7. Elisabetta Paladino
8. Giuseppe Falci

In Statistical and Nonlinear Physics

1. Peter Zoller
2. D. DeMille
3. Mikhail D. Lukin
4. Robert J. Schoelkopf
5. Peter Rabl

Citations in the corpus

• A coherent all-electrical interface between polar molecules and mesoscopic superconducting resonators (2006, background): “For short times, this results in quadratic decay of qubit coherenc”
• 1 / f noise: Implications for solid-state quantum information (2013, background): “Nonself-averaging of the echo signal for 2τ12 γ−10 has also been demonstrated (Schriefl et al., 2006). e. Dephasing according to other phenomenological models –”