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Decoherence induced by anisotropic hyperfine interaction in Si spin qubits | | W. M. Witzel
; Xuedong Hu
; S. Das Sarma
; | | Date: |
15 Jan 2007 | | Subject: | Mesoscopic Systems and Quantum Hall Effect | | Abstract: | We study Si:P donor electron spin decoherence due to anisotropic hyperfine interaction with the surrounding nuclear spin bath. In particular, we clarify the electron spin echo envelope modulation in the Si:P system and the resonance-like contributions from nuclear spins in various shells away from the P atoms. We suggest an approach to minimize the decoherence effect by avoiding the resonances and orienting an applied magnetic field along directions that can periodically eliminate the contributions from the dominant nearest neighbor atoms. | | Source: | arXiv, cond-mat/0701341 | | Services: | Forum | Review | PDF | Favorites | |
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