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DAVIDE VALENTI

Effect of Low-frequency Noise on Adiabatic Passage in a Superconducting Nanocircuit

  • Authors: La Cognata, A; Caldara, P; Valenti, D; Spagnolo, B; D'Arrigo, A; Paladino, E; Falci, G
  • Publication year: 2011
  • Type: Articolo in rivista (Articolo in rivista)
  • OA Link: http://hdl.handle.net/10447/57851

Abstract

Recent experiments have demonstrated coherent phenomena in three-level systems based on superconducting nanocircuits. This opens the possibility to detect Stimulated Raman Adiabatic Passage (STIRAP) in artificial atoms. Low-fequency noise (often 1/f) is one of the main sources of decoherence in these systems, and we study its effect on the transfer e±ciency. We propose a way to analyze low frequency fluctuations in terms of fictitious correlated fluctuations of external parameters. We discuss a specific implementation, namely the Quantronium setup of a Cooper-pair box, showing that optimizing the trade-off between efficient coupling and protection against noise may allow us to observe coherent population transfer in this nanodevice.