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

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.

5 pages, 2 figures; v2: (extended version of the published article) added details of calculations, modified fig. 2, improved "readability"

References in corpus (4)

• Single-shot read-out of an individual electron spin in a quantum dot
• Single-shot readout of electron spin states in a quantum dot using spin-dependent tunnel rates
• Singlet-triplet decoherence due to nuclear spins in a double quantum dot
• Geometric nature of the environment-induced Berry phase and geometric dephasing

Cited by in corpus (1)

• Weak values of electron spin in a double quantum dot