Semiclassical Model for the Dephasing of a Two-Electron Spin Qubit Coupled to a Coherently Evolving Nuclear Spin Bath

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Semiclassical Model for the Dephasing of a Two-Electron Spin Qubit Coupled to a Coherently Evolving Nuclear Spin Bath

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Title: Semiclassical Model for the Dephasing of a Two-Electron Spin Qubit Coupled to a Coherently Evolving Nuclear Spin Bath
Author: Neder, Izhar; Rudner, Mark S.; Bluhm, Hendrik; Foletti, Sandra; Halperin, Bertrand I.; Yacoby, Amir

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Citation: Neder, Izhar, Mark S. Rudner, Hendrik Bluhm, Sandra Foletti, Bertrand I. Halperin and Amir Yacoby. 2011. Semiclassical model for the dephasing of a two-electron spin qubit coupled to a coherently evolving nuclear spin bath. Physical Review B 84(3): 035441.
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Abstract: We study electron spin decoherence in a two-electron double quantum dot due to the hyperfine interaction, under spin-echo conditions as studied in recent experiments. We develop a semiclassical model for the interaction between the electron and nuclear spins, in which the time-dependent Overhauser fields induced by the nuclear spins are treated as classical vector variables. Comparison of the model with experimentally obtained echo signals allows us to quantify the contributions to the nuclear spin evolution of various processes such as coherent Larmor precession and spin diffusion.
Published Version: doi:10.1103/PhysRevB.84.035441
Other Sources: http://arxiv.org/abs/1103.4862
Terms of Use: This article is made available under the terms and conditions applicable to Open Access Policy Articles, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#OAP
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:8013322

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  • FAS Scholarly Articles [7594]
    Peer reviewed scholarly articles from the Faculty of Arts and Sciences of Harvard University
 
 

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