Decoherence of Rabi oscillations of electronic spin states in a double quantum dot

Alessandro Romito; Yuval Gefen

doi:10.1103/physrevb.76.195318

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Decoherence of Rabi oscillations of electronic spin states in a double quantum dot

Alessandro Romito·Yuval Gefen

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Abstract

We study the role of charge fluctuations in the decoherence of Rabi oscillations between spin states |$\uparrow \downarrow$>, |$\downarrow \uparrow$> of two electrons in a double dot structure. We consider the effects of fluctuations in energy and in the quantum state of the system, both in the classical and quantum limit. The role of state fluctuations is shown to be of leading order at sufficiently high temperature, applicable to actual experiments. At low temperature the low frequency energy fluctuations are the only dominant contribution.

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Alessandro Romito, Yuval Gefen. 2009-01-19. Decoherence of Rabi oscillations of electronic spin states in a double quantum dot. https://doi.org/10.1103/physrevb.76.195318

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