Geometric phases in semiconductor spin qubits: Manipulations and decoherence

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dc.creatorSan-Jose, Pablo
dc.creatorScharfenberger, Burkhard
dc.creatorSchön, Gerd
dc.creatorShnirman, Alexander
dc.creatorZarand, Gergely
dc.date2007-10-21
dc.date2008-01-09
dc.date.accessioned2026-07-07T08:53:09Z
dc.date.available2026-07-07T08:53:09Z
dc.descriptionWe describe the effect of geometric phases induced by either classical or quantum electric fields acting on single electron spins in quantum dots in the presence of spin-orbit coupling. On one hand, applied electric fields can be used to control the geometric phases, which allows performing quantum coherent spin manipulations without using high-frequency magnetic fields. On the other hand, fluctuating fields induce random geometric phases that lead to spin relaxation and dephasing, thus limiting the use of such spins as qubits. We estimate the decay rates due to piezoelectric phonons and conduction electrons in the circuit, both representing dominant electric noise sources with characteristically differing power spectra.
dc.description17 pages, 8 figures, published version
dc.identifierhttps://arxiv.org/abs/0710.3931
dc.identifierhttp://arxiv.org/abs/0710.3931
dc.identifierPhys. Rev. B 77, 045305 (2008)
dc.identifierdoi:10.1103/PhysRevB.77.045305
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/145522
dc.subjectMesoscale and Nanoscale Physics
dc.titleGeometric phases in semiconductor spin qubits: Manipulations and decoherence
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